The high-flying Championship side upset the odds on Wednesday night as Korey Smith's last-gasp goal stunned United at Ashton Gate.

That was the fourth top-flight side the Robins have knocked out of this season's competition and they will get the chance to land another victim when they take on the Premier League leaders.

In the other last-four clash, Chelsea will take on Arsenal in a repeat of last season's FA Cup final.

Draw for the Carabao Cup semifinals:

Chelsea vs. Arsenal

Manchester City vs. Bristol City

Ties to be played over two legs in the weeks commencing Jan. 8 and Jan. 22.