It is City’s second trophy of the season.
Speaking after the match, McFarlane maintained the win was crucial to break the cycle of negative results under Rosenior.
Leeds will now travel to Wembley Stadium to face Southampton, who secured a 2-1 victory against Arsenal on Saturday.
The result highlighted Guardiola as winning five Carabao Cup titles and becoming the first manager in the history of the tournament to achieve the feat.
The win saw the Ukrainian deliver a fifth-round knockout at London’s Wembley Stadium, adding the IBF belt to his WBA, WBC, and WBO belts.
Tottenham went into Thursday’s match with a one-goal advantage after they beat Liverpool in the first-leg tie at the Tottenham Stadium.
Dubois, who retained his IBF heavyweight title, dominated the fight from the outset, dropping Joshua multiple times with powerful punches.
Mainoo went on to play 32 times for United, scoring five goals.
Chelsea only have them to blame for the failure to go past Manchester City after forward Nicolas Jackson missed multiple crucial opportunities to score at least one goal.
It was the second time Lockyer had collapsed this year.
