Crystal Palace midfielder Adlene Guedioura will be sidelined for "at least six weeks" after puncturing a lung and breaking two ribs, caretaker manager Keith Millen has revealed.
The 27-year-old, who joined the Eagles from Nottingham Forest in the summer, was forced off midway through the first half of Saturday's 2-0 Barclays Premier League defeat at West Brom.
Guedioura collided with goalkeeper Boaz Myhill and, after receiving lengthy treatment, was carried from the pitch on a stretcher.
"It doesn't look good for him - he's fractured two ribs and it's damaged his lung as well," Millen told Advertiser Sport.
"For cracked ribs, you're looking at around at least six weeks out.
"The trouble with cracked ribs is that you can't exercise and you can't get your heart and lungs going.
"Some injuries, you can keep your cardiovascular fitness up, but with this injury you can't do anything.
"In four weeks' time, if he can do some exercise and it's not aggravating him, then great, he can."