Wigan manager Roberto Martinez fears in-form midfielder James McCarthy has suffered a "terrible injury" after an off-the-ball challenge from Norwich's Bradley Johnson in his side's 2-1 defeat.
McCarthy, 22, has recently been linked with moves to Liverpool and Arsenal, but failed to emerge for the second half at Carrow Road after what Martinez described as a "brutal" challenge on his midfield starlet.
"It was an off-the-ball incident and when you have been involved in the game, you appreciate that challenges like this are not necessary," Martinez said. "The end result is James McCarthy has a terrible injury and that is a real shame."
Norwich boss Chris Hughton wished McCarthy "all the best" after the challenge from Johnson, as the Canaries boss saw his side move ahead of Arsenal and into seventh spot in the Premier League standings after their latest victory.
"Things are going very well and this was a massive win for us because Wigan are a team that play good football and we had to bounce back from the disappointing of going out of the League Cup the other night," Hughton said, referring to his side's 4-1 thumping at home at Aston Villa on Tuesday.
"This result was the perfect response to that setback and while none of us will get carried away, it's great to look at the league table and see Norwich up in seventh position."