Chelsea's Portugese Manager Jose Mourinho (L) and Manchester United's Manager Sir Alex Ferguson (R) greet each other before their F.A Community Shield match football match at Wembley Stadium in London, 05 August 2007. AFP PHOTO/CARL DE SOUZA
Juergen Klopp has attracted a lot of attention since guiding Borussia Dortmund to the Bundesliga title last season. Marius Becker / EPA
Mike Phelan, left, is one of many assistant managers at Manchester United to have been linked to the boss's post eventually. Alex Livesey / Getty Images
David Moyes, right, has lent plenty of solidity to Everton during a decade of management there. The Scotsman is a top contender to succeed Sir Alex Ferguson, left, as Manchester United manager.
Gary Neville, a Manchester United legend, will know the inner workings of the Premier League club. Sean Blake for The National
Like Neville, Ryan Giggs is no stranger to the management structure at United. He will be a fans' favourite. Jon Super / AP Photo
Jupp Heynckes has said of his desire to retire as Bayern Munich manager at the end of the season, but that has not doused speculation of his chances. Arne Dedert / AP Photo
Laurent Blanc, left, is a big name in the French management circuit and will be a contender in neighbouring England. Denis Charlet / AFP
Ole Gunnar Solskjaer, another former Manchester United player to be tipped for Ferguson's job, has had management experience in native Norway. Paul Ellis / AFP