United will entertain Rovers at Old Trafford on Wednesday, 3rd December, the same night that City are in Uefa Cup action against Paris St Germain at Eastlands.
United's tie against Rovers had been scheduled for Tuesday, 2nd December but with both side's playing on Sunday, 30th November the tie was put back by 24 hours.
Greater Manchester Police have confirmed that they are happy with both game's taking place in the city on the same night.