Guardiola continued: 'A special day for United which is a pity.
United came roaring back with a Paul Pogba brace and a goal from Chris Smalling turning the match on its head, delaying City's title celebrations and adding to their torment at the end of a harrowing week following their 3-0 defeat to Liverpool. The same side hold the record for the earliest title win in terms of games remaining with 5 -meaning City would need to rely on a slip up from their crosstown rivals next week to even equal the record.
The last time both United and City met, the Blue side of Manchester had picked up a 2-1 win at Old Trafford.
A number of weeks ago the number crunchers predicted City could well be in line to be crowned champions with a victory over United - but it wasn't to be. He also turned his mind quickly to Wednesday's Champions League quarter-final tie with Liverpool, which City trail 3-0 from the first-leg. We had more ball than normally teams get against City.
"I told them at half time my midfield players couldn't play any better than they had been playing".
"I was really sad with the first goal and I think it is the third corner they scored against us this season", he explained.
This was a game which summed up the good and bad of Pogba in the space of 90 roller-coaster minutes. We did absolutely everything today. But after the interval, he was focused, determined and decisive, with his goals coming at a crucial stage of the game for United.
Before yesterday, Pogba started only five of United's last 12 games, with Mourinho sometimes preferring youth-team graduate and new Scotland worldwide Scott McTominay ahead of his more illustrious colleague. He is everything that a Mourinho midfielder is not, in many ways.
Eriksen then curled in a fiendish 63rd-minute free-kick to which Kane claimed to have got the faintest finishing touch with his head only for replays to show the Dane had scored direct.
So how does Mourinho handle him?
"But a good manager (Jose Mourinho) maybe said in the first half "guys, we have to do something more".
The draw, though, allowed Spurs to move alongside them with a sixth straight league win as they defeated Stoke, whose relegation fears in 19th place were only heightened.
City's form throughout the campaign had made it less of a title race and more like a procession. That's why I congratulate Manchester City, because they are going to win the title and deserve to win the title.
But United started the second half well, and finally tested City keeper Ederson when Paul Pogba tried his luck from range, with the Brazilian holding on well.