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Adam Lallana is on course to bolster Liverpool's top-four challenge after returning to training at Melwood.

Lallana, who has missed the Reds' last four games with a thigh problem, posted a photo on social media of him in training kit ahead of Wednesday morning's session, along with the message “Time to step up”.

The 28-year-old picked up the injury while on international duty with England in their World Cup qualifier against Lithuania on March 26.

Jurgen Klopp has previously stated he expects Lallana to be available for the trip to Watford on Monday week.

And while the player has no chance of being available for Sunday's visit of Crystal Palace, hopes are growing of a return for the final four games of the season as Liverpool look to secure Champions League qualification.

Speaking last week, Klopp said: “I can say that after Palace game, he will be completely normal in training.

“Then Watford comes, so he should be in the squad or I can think about him.”

Klopp, meanwhile, remains hopeful skipper Jordan Henderson could be close to a return having been absent for two months with a foot injury.

Roberto Firmino was pictured training away from the first team as Liverpool look to manage the workload on the Brazilian.