Crystal Palace are waiting on news of Mamadou Sakho's injury ahead of Saturday's visit of Norwich.The Frenchman missed the opening weeks of the season but has played in his side's last three league games.
However, he looks set for a late fitness test after boss Roy Hodgson revealed he has suffered a muscular injury and is a doubt.
"We have a problem with Mamadou Sakho," he said. "He's feeling a slight strain, so we don't know as yet if he'll recover in time to play, but we'll know tomorrow morning."
Connor Wickham has returned to training this week after missing the games against Spurs and Wolves due to an unspecified injury, but Hodgson has confirmed he is still lacking fitness. Wilfried Zaha is expected to be fit following a knock.
Palace's issues pale into insignificance when considering Norwich's absentee list.
While defender Max Aarons has recovered from an ankle injury quicker than expected, Tim Krul and Alex Tettey have now joined Onel Hernandez, Timm Klose, Tom Trybull, Mario Vrancic and Christoph Zimmermann in the treatment room.
Krul's absence is made worse by Ralf Fharmann being doubtful and Daniel Farke may turn to Northern Irishman Michael McGovern in goal.
Crystal Palace have won just five of their 22 top-flight matches with Norwich although the Canaries' last win in this fixture came in May 1996.