Liverpool stars Salah, Mane and Firmino tune up for Manchester United clash - in pictures

Reds' attacking trio will be looking to add to their impressive goals tally at Old Trafford

Roberto Firmino of Liverpool during a training session at AXA Training Centre in Kirkby, England. All photos by Getty Images

Alex Oxlade-Chamberlain of Liverpool laughs during a training session at AXA Training Centre in Kirkby, England. All photos by Getty Images

Goalkeeper Alisson Becker during the training session.

Manager Jurgen Klopp of Liverpool smiles during a training session at AXA Training Centre in Kirkby, England.

Jordan Henderson prepares for the Manchester United clash on Sunday.

Sadio Mane of Liverpool smiles during a training session at AXA Training Centre in Kirkby, England.

Virgil Van Dijk of Liverpool during a training session at AXA Training Centre in Kirkby, England.

Liverpool star Mohamed Salah smiles during a training session at AXA Training Centre in Kirkby, England.

Liverpool will unleash their in-form forwards against Manchester United's struggling defence with goals looking certain in Sunday's blockbuster Premier League clash at Old Trafford.

Jurgen Klopp's front three of Mohamed Salah, Sadio Mane and Roberto Firmino have all been scoring freely for the unbeaten Reds, who are just one point behind leaders Chelsea.

Salah netted twice in the 3-2 win at Atletico Madrid on Tuesday - a result that means Liverpool have scored at least three goals in every away game this season across all competitions.

United also won by the same scoreline in midweek but had to come back from 2-0 down against Atalanta, with Cristiano Ronaldo heading a late winner.

Ole Gunnar Solskjaer's have failed to keep a clean sheet in 12 consecutive home games in all competitions, their longest such run since 1964.

Klopp watched Salah, Mane, and Firmino tune up in training for the match before maintaining that playing United at Old Trafford would be a tough proposition, despite their recent troubles.

"I think Man United is not overly happy with the results they've got so far, but we all know that they are able to do incredible stuff," he said. "We saw it already."

The Liverpool stars in training can be seen in the gallery above. To see the next image, just swipe.

Salah's incredible goals this season

1. Mohamed Salah's first goal of the season came in Liverpool's first game of the season, a 3-0 victory at newly promoted Norwich City on August 14. Reuters

2. Salah's second goal came on August 28, in Liverpool's 1-1 draw with Chelsea. Reuters

3. No 3 of the season was at Leeds United, where Liverpool won 3-0. EPA

4. Another for Salah in the Premier League in the 3-0 win against Crystal Palace on September 18. AFP

5. A thrilling 3-3 draw at Brentford on September 25 saw Salah claim another goal. AFP

6. A goal that will be talked about for years to come: Salah scores a wonderful strike in the 2-2 draw with Manchester City on October 3. EPA

7. The international break did nothing to slow Salah's form, as he danced around Watford's bewildered defence to score in the 5-0 win at Vicarage Road. Reuters

8. Salah scores the third against Manchester United in Liverpool's 5-0 Premier League triumph on October 24. Getty

9. Salah was soon at it again, adding the fourth at Old Trafford. Getty

10. A hat-trick for Salah, adding the fifth in Liverpool's 5-0 win at Manchester United. Getty

11. After three games without a goal, Salah is back on the scoresheet in the 4-0 demolition of Arsenal in the Premier League on November 20. EPA

12. Another to delight the Liverpool fans as Salah scores his side's second goal during the 4-1 Merseyside derby win at Everton on December 1. AP

13. His next came in the same match at Goodison Park. EPA

14. The only goal of the game in the 1-0 Premier League victory over Aston Villa at Anfield on December 11. EPA

15. Liverpool keep the momentum going with a 3-1 win over Newcastle at Anfield, with Salah netting the second, on December 16. Reuters

16. Salah celebrates another goal in the 2-2 draw at Chelsea on January 2. AP

17. Salah scores the second goal in the 3-1 win against Norwich on February 19. PA

18. Mohamed Salah scores in the 6-0 win against Leeds on February 23. PA

19. Salah after scoring his second goal of the game against Leeds. AP

20. Another stunning season for Mohamed Salah as he notches Premier League goal No 20 in the 2-0 win at Brighton on March 12. PA