"Liam's injury is worse than we feared," Robins boss Gary Johnson told the Bristol Evening Post.
"He went for the scan on Monday and it showed up ligament damage. He will be out for a minimum of three weeks and maybe longer."
Celtic wrapped up their first domestic treble since 2001 as they beat Aberdeen 2-1 in the final of the William Hill Scottish Cup.
Francesco Totti will call time on his 24-year career as a Roma player after the game with Genoa.
England's record goalscorer Wayne Rooney has been left out of Gareth Southgate's England squad for the second time in a
Manchester City players expect to be lining up alongside ALEXIS SANCHEZ and KYLE WALKER at the Etihad Stadium next season, according to the Mirror.
Sam Allardyce left his role as manager of Crystal Palace on Tuesday night, leaving the Selhurst Park hierarchy in the
Ajax stand between Manchester United and Europa League glory on Wednesday.