Crystal Palace boss Alan Pardew admits the Eagles are missing injured striker Connor Wickham.
Palace were beaten 1-0 by Leicester City on Saturday and have now scored just four goals in their last six Premier League games.
"We are missing some big offensive players and that is beginning to hinder us," Pardew said.
"We really need to push now. That is a little bit of a concern for us."
Meanwhile, Pardew backed on-loan Chelsea striker Patrick Bamford after the substitute missed two chances against Leicester.
"It was important for him to come on and make his presence felt," Pardew said.
"There were a couple of moments from him and hopefully he can build on that."