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Liverpool have received a huge lift ahead of their epic showdown with Manchester United .

Three of their key players were involved in training on Tuesday, putting themselves firmly in contention for the weekend.

Mo Salah was crucially back working outside and he was joined back at the club’s Melwood centre by Joel Matip and keeper Alisson.

All three took part in special sessions and both Alisson and Matip will play in that game at Old Trafford on Sunday.

They were both able to complete full sessions with the squad, and showed enough to convince boss Jurgen Klopp of their fitness.

(Image: Liverpool FC via Getty Images)

Reds forward Salah had been given some time off last week, as he travelled to Abu Dhabi to receive the GQ Middle East man of the year award.

The Egyptian had suffered a painful ankle injury against Leicester , but he was able to work with a fitness coach and join some of the drills before a short-sided game.

Salah was excused the contact of that, but if he comes through his tailored sessions without reaction, he should be able to return to full squad training this week, allowing him to face United.

(Image: 2019 Liverpool FC)

Liverpool were still without most of their internationals who were away on duty for their countries, but Naby Keita trained after being allowed to miss Guinea’s two friendlies during the break, to build up his fitness.

Sadio Mane has been given some time off after playing for Senegal against Brazil last week, but is likely to be back tomorrow.

Roberto Firmino and Fabinho, who have both been on international duty in the Far East with the Selecao, should return to Melwood on Thursday.