United and Cardiff will go head-to-head next week for the right to face either Blackpool or Reading away in the fourth round of this season's Emirates FA Cup competition.
Carlisle, who just don't do home draws these days, battled out a 2-2 draw at the Cardiff City Stadium on Saturday, with Jack Bridge and Harry McKirdy giving the Blues a half-time advantage before being pegged back by goals from Callum Paterson and Gavin Whyte.
League One Blackpool also turned on the away day style against Championship Reading as they twice took the lead at the Madejski stadium thanks to Nathan Delfouneso and Armand Gnanduillet.
The Royals needed Sam Baldock and Danny Loader to avoid the banana skin as Simon Grayson's outfit gave their hosts a real test.
We'll have the confirmed Cardiff City match details on the official website as soon as they have been finalised.
Fourth round matches will be played between Friday 24 and Monday 27 January.