Egypt star Mohamed Salah joined his teammates in the last training session for the national team in Grozny, Chechnya before they head to Yekaterinburg, where they will face Uruguay on Friday in the World Cup opener.
The Reds lost 3-1 to La Liga giants Real Madrid in the Champions League final after Salah was forced off in the first half due to a shoulder injury.
Salah told reporters on Sunday that he expected to play against Uruguay, before he flew to Russian Federation with the rest of the Egyptian squad.
Team director Ihab Lahita said: "There's a good degree of progress but no definitive decision on whether he takes part, as we are following his case day by day".
Leheita said a physiotherapist from the medical staff of Salah's Liverpool club was at Grozny to help, and denied the English club was pressuring the Egyptians not to play Salah before he is fully fit.
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Mohamed Salah appeared uncomfortable and eager to protect his injured shoulder as an Egypt fan attempted to claim a selfie with the Liverpool star.
Uruguay goalkeeper Fernando Muslera has expressed hope that Salah will play against the South Americans, saying he wants to play against the best at football's showpiece tournament.
Its group also includes Saudi Arabia and host Russian Federation.
Salah is regarded as a contender for the Ballon d'Or, alongside Argentina's Lionel Messi, Portugal's Cristiano Ronaldo and Neymar of Brazil.