Pulis said: "Kevin hurt his ankle in training, so we are watching that.
"We are absolutely desperate for him to be fit for the weekend. He's been terrific for us since he came here. He's been the difference between us going forward or not."
He added: "Since Kevin came he has started to open up doors for us. He has been the outlet we've been crying out for all season, that's why we are desperate to get him fit for the weekend."