Coutinho, 28, started the game on the bench and came on in the second half but limped off the pitch during stoppage time as Barcelona finished the game with 10 men having made all their substitutions.
Browsing: Knee Surgery
The Argentina international was forced off with a knee problem shortly before half time at the Etihad Stadium as Pep Guardiola’s side sealed a comfortable 5-0 victory.
Barcelona have been dealt a huge blow in their quest for success as Luis Suarez has been ruled out for four months after undergoing knee surgery.
Antonio Rudiger will undergo knee surgery on Tuesday with the defender expected to miss the remainder of Chelsea’s crucial run-in.
Crystal Palace defender, Mamadou Sakho, has had a knee operation and is set for a spell on the sidelines, manager Roy Hodgson said on Friday.
The second round of the Australian Open will feature a rematch of the 2008 final between Novak Djokovic and Jo-Wilfried Tsonga.
Jo-Wilfried Tsonga has been forced to withdraw from the US Open after failing to recover sufficiently from knee surgery.