"We lost last season here against Sevilla [in the Champions League] and were booed because we deserved to be, because we were not good, we were not risky enough, because Sevilla deserved to win the match".
Tottenham hadn't even scored in losing on their four previous trips to Old Trafford under Mauricio Pochettino.
The North Londoners are now on three wins from three, while they've just inflicted United's second defeat of the season following last week's horror show at Brighton.
"3-0. Do you know what this means?"
But after a well-matched first half, the visitors ran riot, with Harry Kane opening the scoring 50 minutes in before Lucas Moura hit a double to seal a 3-0 victory. And as impressive as they were on Monday, this Tottenham side is still not playing up to its considerable ability despite starting the 2018-19 campaign with three consecutive wins.
Hugo Lloris kept his place in the Spurs goal and retained the captain's armband despite being arrested for drink driving in the early hours of Friday. Bastian Schweinsteiger was a World Cup victor when he arrived at United from Bayern Munich, but Mourinho has moved them all on because their future was nowhere near as bright as their past.
The 55-year-old admitted he is not certain about his defence.
Patient Fabinho adapting to 'intense' Premier League
The visitors did come out brighter in the second half, but they were still unable to carve out clear-cut chances. The Reds sit top of the Premier League at present, with three wins from three games so far this term.
"No", he said. "Because in the first game Lindelof and Bailly, now Jones and Smalling but now Jones is injured and in the next match will be Smalling with another one and when Marcos Rojo comes he will also be an option".
Kane all too easily got free at a corner and directed a super header into the top right-hand corner.
Kane's 50th-minute opener was soon added to as Christian Eriksen ghosted behind to send in a cross directed home by Moura. It can provide us very good confidence and trust with how we are working.
Mourinho himself said of the heavy defeat: "We worked all week and from the tactical point of view we didn't lose, but we lost the game".
"But all our fans don't read papers, all our fans don't watch television, all our fans are more intelligent than that - they answered in an absolutely incredible way".
"It's not normal to lose a home game and the fans react like that, our fans responded in an awesome way".