Crystal Palace boss Roy Hodgson admits they could buy in January.
Midfielder Cheick Doucoure is facing his season being over due to an achilles injury.
Hodgson said, "That is a question for the club, of course, for [Chairman] Steve Parish and [Sporting Director] Dougie Freeman, first of all.
But there's no doubt that they are on my side in that respect as well, in the sense that we do think we could do with some replacements and reinforcements in certain positions in the team.
"And, of course, now with the injury [to Cheick Doucour] that's befallen us, that central midfield position becomes a priority for us."