Fourth round ties will be played on the weekend of January 24/25.
The two cities drew 2-2 in the third round at the City of Manchester Stadium on Saturday while we beat Palace to progress. We'll know our fourth round destiny next Wednesday, January 14, when they replay.
Our record is good against both teams this season - we drew 0-0 at Manchester and beat Leicester 2-1 away in the Premiership and beat Kevin Keegan's men 3-1 in the Carling Cup at the Lane.
We have been drawn away to either Manchester City or Leicester City in the fourth round of the FA Cup.