Mane later wished Ederson well in a post on his Facebook page.
Leroy Sane, one of their second-half substitutes, scored both and Ederson was back in the stadium to see the final one - the game's outstanding moment - fly into the top corner.
Guardiola said the game was "tight" and "equal" before Mane's dismissal. It's unlucky, really unlucky to play against City with 10 men. De Bruyne found space on the flank then whipped an exquisite ball into the box. It proved only a minor reprieve as he headed home another effort from De Bruyne's cross just before the break.
Ederson, who took a kick to the face, was replaced by Claudio Bravo, while Mane is now facing a three match ban.
Another reminder that Agüero has also never been named in the PFA Team of the Year, despite statistically having the best minutes-per-goal ratio in Premier League history for most of his stay in Manchester.
City, however, have players that are yet to settle into their positions, and when the likes of Kyle Walker and Benjamin Mendy get into their groove, the Citizens will be a force to get reckoned with. And that teammate was Sane in the 77th minute, stroking the Frenchman's cross past a beleaguered Mignolet.
Dogs rescued in wake of Hurricane Harvey arrive in Pittsburgh
The shelter will not be accepting owner surrenders or strays until Hurricane Irma no longer poses a threat to SC . Last week, around 100 dogs were airlifted from shelters throughout Texas to New Jersey to be placed for adoption.
Yasin Malik arrested by NIA, Mirwaiz Umar Farooq put under house arrest
NIA confirmed that the raids were conducted at 20 locations in Srinagar seven locations in New Delhi . Earlier today, NIA raided Hurriyat leader Aga Hassan's residence in Jammu and Kashmir's Budgam.
Kylian Mbappe, Neymar train together at Paris Saint-Germain
I have a lot of respect for [Monaco vice president] Vadim Vasilyev, who is a remarkable man. It was a whole new world. "You always believed in me, encouraged me, helped me".
Liverpool forward Sadio Mane has apologised for the foul that earned him a red card and meant that Manchester City goalkeeper Ederson Moraes had to be stretchered off.
The last 30 minutes was an exercise in damage limitation for Liverpool.
City soon killed off the game in the second half.
And there are plenty of reasons why the Sky Blues faithful broke into a song near the end of the game.
Liverpool will play Sevilla in the Champions League on Wednesday as City will play away to Feyenoord on same day.