Phil Foden was forced off at half-time after suffering another ankle problem on a nightmare night for Manchester City.
Pep Guardiola revealed that Foden had complained of an issue with his ankle early on during the 2-1 defeat at RB Leipzig.
The 21-year-old only returned from the same injury last week and City are sweating on the extent of his latest setback ahead of Saturday's Premier League clash with Wolves.
Nathan Ake was also substituted with a back injury, shortly after Kyle Walker had seen red for a petulant kick at Leipzig striker Andre Silva.
'Phil had problems in the beginning of the game with his ankle,' Guardiola said. 'He struggled a little bit so he was taken off as a precaution and we put Raheem (Sterling) in his position.'
Walker's sending off represents a major headache for Guardiola when the Champions League returns in February.
The right back will miss at least one match, the first leg of their last-16 tie, but that could yet to be increased by UEFA's disciplinary panel when they review the incident.
'It's definitely a red card,' Guardiola added, before being asked if the pair had spoken afterwards.
'I'm not coming here to say what happened in the dressing room. We made an incredible group stage, we qualified with one game left from a tough group. I am more than satisfied with the performance in every single game.'
City left back Oleksandr Zinchenko said: 'Kyle is such an important player for us, everyone knows that he's one of the best full-backs in the world. The team needs him.
'Unfortunately he got the red card, I don't know if it was the right decision because I didn't see it.
'He was disappointed in the dressing room. But there is no time to be sad, we have to react well. We have to move on.'
lawalidris
0
as usual, man shitty is not winning any champions league trophy this season.
Liver poo poo fan how sure are you?
tukcdstuy
0
we will and show your gayface
Welp good luck
Cetcikmz
0
Like y’all would win
we will and show your gayface
Nevesashkelon
3
Manchester city ruined my betting agh 🤪
Raju59
0
Man City taught how to play football. They are just used to beating English clubs
That’s why they beat most of the Europe teams since few years. Madrid, Dortmund, PSG, etc. So you don’t watch football!
norriske
1
Man City taught how to play football. They are just used to beating English clubs
Don't talk rubbish.. City defeated all the teams in the, leading the group with a game to spare
Cimemrsuy
4
Man City taught how to play football. They are just used to beating English clubs
Tosabimuy
1
City have quality players 3 to 4 injury against them is nothing, I realized even their 2nd choice goalkeeper is not a 2nd choice at all
Caobimnryz
0
as usual, man shitty is not winning any champions league trophy this season.
man city vs Liverpool semi final
Caobimnryz
0
he will only miss two games
tukcdstuy
0
as usual, man shitty is not winning any champions league trophy this season.
Like y’all would win
mbffuutdjo
2
Manchester City Opponent Win I'm not so Fine
Naycdknr
1
as usual, man shitty is not winning any champions league trophy this season.
SINGAM23
3
while every UCL qualified English clubs celebrating, but Manchester City were left in Blue because they're not dominating... by then they're simplified by their own downfall 😓
Danish_Tanveer_
5
They have talent on the bench like this app have clowns writer's