The Under-21s have a Premier League 2 game against Southampton on Friday 13 March.
The clash was due to be played in the evening but has switched to a 13:00 GMT kick-off, and will take place at Carrington.
Meanwhile, the Under-18s have had to move the away game at Sunderland on 14 March.
It will now be staged at the Academy of Light on Saturday 25 April instead, kicking off at 12:30 BST.