Ghana international Muntari admitted that he does not know yet whether he will start the match on the pitch or the bench, as it will be up to his coach Jose Mourinho to decide.
"I don't know yet if I will play, but Mourinho is my coach," declared Muntari during the official press conference.
"I can always sit next to him, but whether I play or not is something he decides."
What bodes well for Inter is that last season Muntari scored the winner against the Red Devils when he was playing for Portsmouth.
"Yes, I remember well that goal, but this is a totally different story," he continued.
"I play this game with Inter, with many important team-mates and with many champions with me."
The Serie A leaders need to beat Manchester United or hold them to a scoring draw; another goalless draw would send the game into extra-time.
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