He picked his strongest available side for Saturday's Barclays Premier League win at Tottenham but may be tempted to shuffle his pack on Tuesday night with Sunday's top-of-the-table clash with United in mind.
But he said: "I won't think about Manchester United, only this game. We've got to focus on it, try to win the game and that's a big, big boost for our campaign in the Champions League."
He added: "There are always knocks and bruises and maybe some fatigue as well considering the majority of our team have been away on international duty.
"Some of them have played two games for their country. All these things are things to think about."