The youngsters are competing for a place in round 6 against either Watford or Ipswich. They played on Monday night but their game was abandoned in the 88th minute because of bad weather. The referee stopped the game and it will have to be played again. It was 0 - 0 at the time.
This is the second time of asking for Cardiff's game. The original tie was called off last Thursday.
Kick off tonight is at 7pm and it's just £3 for an adult ticket. Concessions £1.