Manchester United crashed out of the Carabao Cup in a 2-1 defeat to Bristol City as Korey Smith scored a dramatic stoppage-time winner to send the Championship side into the last four.
Despite naming a strong line-up that included Paul Pogba, Jose Mourinho saw his team fall behind to a spectacular opening goal by Joe Bryan before Zlatan Ibrahimovic fired home an equaliser.
Substitute Romelu Lukaku had chances to win it for United but with extra-time looming, Smith struck the decisive blow with the last kick of the game to land them a semi-final tie with Manchester City.
Bristol City have become just the second team to knock out four top-flight sides in one League Cup campaign.
Read Also Swansea sack manager Paul Clement
Eight months to the day since he seriously injured his knee, Ibrahimovic was at the thick of the action early on. Anthony Martial’s back-post cross found the striker, whose knock back deflected off Nathan Baker and against the crossbar.
Rashford then rattled the woodwork on 21 minutes with a thunderous low strike, before Daley Blind denied Smith with a well-timed last-ditch tackle when the midfielder had skipped through on goal.
United lacked rhythm in their play and it was the energetic visitors that maintained their front-foot approach after the break and they got their reward on 51 minutes.
Bryan picked the ball up inside his own half and instigated a counter with a clever flick over Blind. He followed his run and produced a stunning strike from a tight angle into the top corner.
United were behind for just eight minutes as Ibrahimovic celebrated his return with a powerful 20-yard strike from a free-kick on the edge of the area after Pogba was felled.
Mourinho sent on Lukaku and Henrik Mkhitaryan in search of a winner. Lukaku made a big impact, testing Luke Steele with three efforts that the goalkeeper got down quickly to. The third on 83 minutes was an outstanding one-handed save down to his left as Bristol City started to sink deeper but created one last chance, which they sensationally took.
Matty Taylor was given space down the left and his cross dropped for Smith inside the area. He kept his composure and fired a low effort past Sergio Romero.
Ashton Gate erupted.
