Chelsea need their London rivals to do them a favour, but Curbs hinted: "Perhaps some players have only seen Old Trafford on the TV might get a chance. It will be another learning curve for one or two of them and I have been happy with young Tomkins.
"Our problems have actually made us stronger because our squad player have been getting games and are more experienced.
"Obviously we won't be going with the pressure we had on us last year but we want to finish the season as strongly as we can. We will go there and give it our best shot."