The Portuguese boss signed the likes of Zlatan Ibrahimovic, Paul Pogba, Henrikh Mkhitaryan and Eric Bailly without Champions League football to offer and it's only set to get better this summer. "We performed like a big team today and I think our fans can be very proud of us".
Marouane Fellaini came close to a third goal for United, but his header from Pogba's delicious cross went straight at Andre Onana.
United's victory means they qualify for next season's Champions' League, despite finishing only sixth in the Premier League.
"So if I say something about my finals - not just European finals but other finals - where I won some and lost some, something that is always present on my teams is we are always very humble". He became the youngest player ever to take part in a European final.
An additional 1.5 million euros is up for grabs for each win in the Champions League group stage, while reaching the last 16 would bring an extra windfall of 16 million euros.
United will get another shot at a continental trophy when they line up against Real Madrid or Juventus in the Super Cup final in Skopje, Macedonia on August 8.More news: Trump records robocall for Montana special election
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"If we could, we would obviously change the people's lives for this cup, immediately", the manager said after the match. Mourinho has won both on multiple occasions and would love nothing more than to repeat those successes in Manchester.
One Manchester City fan came to watch the game in his sky blue kit with the message "A City, United" written proudly on his back. Many other staff. The work they did to organise everything for us, for our families, to come to this important match with a short period of time, the way people dedicate themselves to that, to try to have our heads clean and focused and everything was ideal.
Qualifying for the Champions League via a top-four finish in the Premier League has never been tougher, with six teams - Chelsea, Tottenham, Manchester City, Liverpool, United, and Arsenal - genuine heavyweights.
"It is the end of a very hard season".
But the Dutch club did not give up even after behind to United. "We play for England, for Manchester and the people who died". "There are a lot of emotions but I think you have to take those emotions and turn them into a positive".