Borussia Dortmund striker Sebastien Haller has thanked his well-wishers after being diagnosed with a testicular tumour.
The Ivorian, 28, left the team's pre-season training camp in Switzerland on Monday after the discovery of the tumour following a medical examination.
Haller said on Twitter: “Thank you all for your many messages of support and affection since yesterday’s announcement. My family and I thank you. I will now focus on my recovery to come back stronger.”
Further tests are scheduled to take place in a specialist medical facility over the coming days, the German club said.
Dortmund announced Haller’s diagnosis on Twitter and the club’s sporting director Sebastian Kehl said: “This news today came as a shock to Sebastien Haller and everyone else.
“The entire BVB family hopes that Sebastien makes a full recovery as soon as possible and that we can give him a hug again soon.
“We’ll do everything in our power to ensure that he receives the best possible treatment.”
Haller’s teammate at Dortmund, England midfielder Jude Bellingham, tweeted his support for the former West Ham United striker.
Bellingham said: “Stay strong and get better soon brother, we’re all with you!”
Haller joined Dortmund earlier this month on a four-year contract as a replacement for Erling Haaland , who has signed for Manchester City.
Dortmund paid Ajax €31 million ($31.5 million) for Haller after he scored 47 goals in 66 appearances for the Dutch side after joining in 2021 from West Ham.
His 21 league goals in 31 games saw him finish as top scorer in the 2021/22 Eredivisie as Ajax secured a record-extending 36th title .
Dortmund's first game of the new Bundesliga season is against Bayer Leverkusen on August 6, eight days after heading to third-tier 1860 Munich in the first round of the German Cup.
100 notable summer transfers Perr Schuurs - Ajax to Torino (£8m). AFP
Paco Alcacer - Villarreal to Sharjah (loan). Getty Images
Matheus Nunes - Sporting to Wolves (£38m). AFP
Tanguy Nianzou - Bayern Munich to Sevilla (£16.9m). AFP
Alan Virginius - Sochaux to Lille (£3.8m). AFP
Thilo Kehrer - PSG to West Ham (£10.1m). Getty Images
Pervis Estupinan - Villarreal to Brighton (£15.1m). Getty Images
Destiny Udogie - Udinese to Tottenham (£15.1m). Loaned back to Udinese. Reuters
Sergio Gomez - Anderlecht to Manchester City (£11m). Photo: Manchester City
Alex Collado - Barcelona to Elche (loan). AFP
Remo Freuler - Atalanta to Nottingham Forest (£9m). AP
Marc Bartra - Real Betis to Tranbzonspor (undisclosed fee). Getty Images
Giovani Lo Celso - Tottenham to Villarreal (loan). Getty Images
Cheikhou Kouyate - Crystal Palace to Nottingham Forest (free). Getty Images
Emmanuel Dennis - Watford to Nottingham Forest (£20m). Getty Images
Nico González - Barcelona to Valencia (loan). AP Photo
Luca Pellegrini - Juventus to Eintracht Frankfurt (loan). AFP
Daniel Wass - Atletico Madrid to Brondby (£1.7m). EPA
Pablo Marí - Arsenal to Monza (loan). AP
Dries Mertens - Napoli to Galatasaray (free). AFP
Jordan Veretout - Roma to Marseille (£9.3m). Reuters
Christian Benteke - Crystal Palace to DC United (undisclosed fee). AFP
Maxwell Cornet - West Ham United to Burnley (£17.5m). PA
Georginio Wijnaldum - PSG to Roma (loan). AFP
Lucas Torreira - Arsenal to Galatasaray (£5m). AFP
Marc Cucurella - Brighton to Chelsea (£55m). Getty Images
Ademola Lookman - RB Leipzig to Atalanta (£12.6m). PA via AP
Renato Sanches - Lille to Paris Saint-Germain (£12.6m). AFP
Riqui Puig - Barcelona to LA Galaxy (free). AP Photo
Alex Telles - Manchester United to Sevilla (loan). AFP
Carney Chukwuemeka - Aston Villa to Chelsea (£20m). Reuters
Kasper Schmeichel - Leicester City to Nice (£1m). AFP
Mattia Viti - Empoli to Nice (£10.9m). AFP
Gabriel Slonina - Chicago Fire to Chelsea (£8.3m). Reuters
Bernd Leno - Arsenal to Fulham (£3m). AFP
Charles De Ketelaere - Club Brugge to AC Milan (£26.8m). AFP
Joe Rodon - Tottenham to Stade Rennais (loan). AFP
Borja Mayoral - Real Madrid to Getafe (£8.4m). EPA
Cesc Fabregas - Monaco to Como (free). EPA
Alexis Beka Beaka - Lokomotiv Moscow to Nice (£11.7m). AFP
Marcus Tavernier -Middlesbrough to Bournemouth (£10m). Getty Images
Aaron Ramsey - Juventus to Nice (free). AFP
Orel Mangala - Stuttgart to Nottingham Forest (£12.7m). AFP
David Raum - Hoffenheim to RB Leipzig (£21.8m). Getty Images
Oscar Mingueza - Barcelona to Celta Vigo (£2.5m). Getty Images
Jules Kounde - Sevilla to Barcelona (£45m). AFP
Dwight McNeil - Burnley to Everton (£20m). Getty Images
Arnaud Kalimuendo - PSG to Rennes (£21m). Getty Images
Filip Kostic - Eintracht Frankfurt to Juventus (£14.4m). EPA
Salvatore Sirigu - Genoa to Napoli (free). Reuters
Mikkel Damsgaard - Sampdoria to Brentford (£12.7m). EPA
Malang Sarr - Chelsea to Monaco (loan). AFP
Issa Diop - West Ham United to Fulham (£15m). Getty Images
Alexis Sanchez - Internazionale to Marseille (free). Getty Images
Timo Werner - Chelsea to RB Leipzig (£18m). AP
Amadou Onana - Llle to Everton (£33.8m). AFP
Emirhan Ilkhan - Besiktas to Torino (£3.8m). PA
Gonçalo Guedes - Valencia to Wolves (£27.5m). AP Photo
Conor Coady - Wolves to Everton (loan). Getty Images
Anthony Modeste - Cologne to Borussia Dortmund (£3.8m). EPA
Angeliño - RB Leipzig to Hoffenheim (loan). Getty Images
Marcos Senesi - Feyenoord to Bournemouth (£12.6m). AFP
Isco - Real Madrid to Sevilla (free). EPA
Raheem Sterling - Manchester City to Chelsea (£50m). Getty Images
Lisandro Martinez - Ajax to Manchester United (£46m). Getty Images
Robert Lewandowski - Bayern Munich to Barcelona (£38.3m). AFP
Hugo Ekitike - Reims to Paris Saint-Germain (loan). AFP
Thomas Henry - Venezia to Verona (£3.8m). Getty Images
Takefusa Kubo - Real Madrid to Real Sociedad (£5.2m). Getty Images
Kalidou Koulibaly - Napoli to Chelsea (£33.8m). EPA
Chancel Mbemba - Porto to Marseille (free). EPA
Breel Embolo - Borussa Monchengladbach to Monaco (£10.6m). EPA
Christian Eriksen - Brentford to Manchester United (free). PA
Raphinha - Leeds United to Barcelona (£49m). Getty Images
Federico Bernardeschi - Juventus to Toronto FC (free). Getty Images
Andrea Cambiaso - Genoa to Juventus (£5.9m). Getty Images
Arturo Vidal - Inter Milan to Flamengo (free). Getty Images
Mohamed Bayo - Clermont to Lille (£11.8m). AFP
Francisco Trincao - Barcelona to Sporting (loan). Getty Images
Samu Castillejo - AC Milan to Valencia (undisclosed fee). PA
Lewis Ferguson - Aberdeen to Bologna (£3m). PA
Keane Lewis-Potter - Hull City to Brentford (£16m). PA
Alessio Romagnoli - AC Milan to Lazio (free). Getty Images
Nathan Collins - Burnley to Wolves (£20.5m). PA
Andriy Yarmolenko - West Ham United to Al Ain (free). AP Photo
David Ospina - Napoli to Al Nassr (free). Getty Images
Kristian Thorstvedt - Genk to Sassuolo (£8.4m). Reuters
Andreas Pereira -Manchester United to Fulham ( £10m). Getty Images
Gabriel Jesus - Manchester City to Arsenal (£45m). Getty Images
Steven Bergwijn - Tottenham Hotspur to Ajax (£26.5m). AP Photo
Andreas Christensen - Chelsea to Barcelona (free). AFP
Sébastien Haller - Ajax to Borussia Dortmund (£30.8m). AFP
Flynn Downes - Swansea City to West Ham United (£12m). PA
Junior Messias - Crotone to AC Milan (£3.8m). Reuters
Luis Sinisterra - Feyenoord to Leeds United (£21.3m). AFP
Brais Méndez - Celta Vigo to Real Sociedad (£12.8m). Getty Images
Moussa Niakhaté - Mainz to Nottingham Forest (£8.7m). Getty Images
Romeo Lavia - Manchester City to Southmpton (£12m). AP Photo
Tyler Adams - RB Leipzig to Leeds United (£20m). AP
Axel Witsel - Borussia Dortmund to Atletico Madrid (free). EPA
Maya Yoshida - Sampdoria to Schalke (free). AP Photo
Tyrell Malacia - Feyenoord to Manchester United (£12.9m). AP Photo
Zeki Celik - Lille to Roma (£6m). AFP
Ritsu Doan - PSV Eindhoven to Freiburg (£6.5m). AFP
Divock Origi - Liverpool to AC Milan (free). AFP
Rolando Mandragora - Torino to Fiorentina (£7m). EPA
Joao Palhinha - Sporting to Fulham (£17m). Getty Images
Franck Kessie - AC Milan to Barcelona (free). Getty Images
Trezeguet - Aston Villa to Trabzonspor (£3.4m). AFP
Kalvin Phillips - Leeds United to Manchester City (£45m). Reuters
Giulian Biancone - Troyes to Nottingham Forest (£5m). AFP
Giuliano Simeone - Atletico Madrid to Real Zaragoza (loan). EPA
Raoul Bellanova - Cagliari to Inter Milan (loan). Getty Images
Richarlison - Everton to Tottenham (£50 million). PA
Fabio Carvalho - Fulham to Liverpool (£5 million). PA
James Tarkowski Burnley to Everton (free). Getty Images
Sime Vrsaljko - Atletico Madrid to Olympiakos (free). AP Photo
Dean Henderson - Manchester United to Nottingham Forest (loan). PA
Luuk de Jong - Sevilla to PSV Eindhoven (£3.4m). AP Photo
Henrikh Mkhitaryan - Roma to Inter Milan (free). Reuters
Cenk Tosun - Everton to Besiktas (free). Reuters
Andre Onana - Ajax to Inter Milan (free). Getty
Moussa Sissoko - Watford to Nantes (£2m). AFP
Corentin Tolisso - Bayern Munich to Lyon (free). AFP
Vitinha - Porto to Paris Saint-Germain (£34m). AFP
Romelu Lukaku - Chelsea to Inter Milan (loan). PA
Lorenzo Insigne - Napoli to Toronto FC (free). AP
Sven Botman - Lille to Newcastle United (£31.9m). AFP
Takumi Minamino - Liverpool to Monaco (£15.5m). Getty Images
Alphonse Areola - Paris Saint-Germain to West Ham United (£7.8m). AFP
Lucas Leiva - Lazio to Gremo (free). Getty Images
Joselu - Alaves to Espanyol (free). Getty Images
Matt Turner - New England Revolution to Arsenal (£4.7m). Reuters
Fernandinho - Manchester City to Athletico Paranaense (free). PA
Bartol Franjic - Dinamo Zagreb to Wolfsburg (£6.9m). Getty Images
Wahbi Khazri - Saint-Etienne to Montpellier (free). AFP
Tobias Figueiredo - Hull City to Nottingham Forest (free). PA
Pietro Pellegri - Monaco to Tornio (£3.9m). Getty Images
Erling Haaland - Borussia Dortmund to Manchester City. Getty Images
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Taiwo Awoniyi - Union Berlin to Nottingham Forest (£17m). Getty Images
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Lucas Alario - Bayer Leverkusen to Eintracht Frankfurt (£5.6m). PA
Sadio Mane - Liverpool to Bayern Munich (£28m). Getty Images
Armindo Sieb - Bayern Munich to Greuther Fürth (undisclosed fee). Getty Images
Nick Pope - Burnley to Newcastle (£10m). PA
Ki-Jana Hoever - Wolves to PSV Eindhoven (loan). PA
Ryan Fredericks - West Ham United to Bournemouth (free). Getty Images
Mario Götze - PSV Eindhoven to Eintracht Frankfurt (£3.4m). Getty Images
Fabio Vieira - Porto to Arsenal (£30m). EPA
Antonio Rudiger - Chelsea to Real Madrid (free). PA
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Marc Roca - Bayern Munich to Leeds United (£10m). PA
Yves Bissouma - Brighton to Tottenham (£25m). PA
Gavin Bazunu - Manchester City to Southampton (£12m). PA
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Nemanja Matic - Manchester United to Roma (free). EPA
Ryan Gravenberch - Ajax to Bayern Munich (£20m). EPA
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Updated: July 19, 2022, 10:47 AM