Mourinho went on to criticise some of his players, accusing some of them of not turning up.
Bristol City and Chelsea join Arsenal and Manchester City in the semi-final draw.
The semi-finals will be played over two legs. "City are a beast of an organisation".
Jose Mourinho's side were holders after winning the League Cup last season.
The key will be managing to stay in the tie in a testing first leg at Man City's Etihad Stadium early in the New Year.
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Apple , like most smartphone manufacturers, generally sticks to a yearly release schedule when it comes to their new flagships. Apple is planning to launch upgraded AirPods in the second half of 2018, according to KGI Securities analyst Ming-Chi Kuo.
Unidentified ball boy ran straight to the Bristol City boss Lee Johnson who picked him up above the ground and swing him round in the air as celebration went wild. "It was a big night for them and probably for some of my players it wasn't a big night - it was just one more day in the office and when you play against teams who have that extra motivation, you also need that extra motivation - so congratulations to them".
The exultant scenes that greeted Korey Smith's 93rd minute victor would, reckoned Johnson, "live in the memory of this football club for many years". "But I think tonight was the greatest moment in both of our tenures", reckoned Johnson, whose team are pushing for promotion in third place. "I have had good and bad times against them", he said, in quotes reported by the Evening Standard.
"That's why they are one of if not the biggest club in the world".
Joe Bryan opened the scoring for the Robins in the 51st minute with a thunderous strike, but it only took five minutes for Zlatan Ibrahimovic to equalise with a well struck free-kick, before Korey Smith blasted in the victor ten seconds from time.
Mourinho, while praising City for playing "the game of their lives", could not quite bring himself to offer unqualified admiration as he kept suggesting the home side were "lucky" to survive with Ibrahimovic and Marcus Rashford hitting the woodwork. City's head coach may have spent £450 on a bottle of fine red wine for José Mourinho but he will never have to buy a drink in the red half of Bristol again.