Pep Guardiola is not sure when he will be able to call on Sergio Aguero with the Manchester City striker isolating after coming into contact with someone who has tested positive for Covid-19.
City's manager had said that Aguero would start the game as long as he trained well in the weekend training sessions as the Argentine looks to finally get his season firing, but was said to be unavailable but not injured when he was not part of the 20-man squad that arrived at the Etihad on Sunday for the FA Cup clash.
Gabriel Jesus started up front and Liam Delap came off the bench in a comfortable 3-0 win but the Blues will have to wait to welcome Aguero back.
"Unfortunately he was in contact more than usual with one person who is positive," he said.
"He must isolate for a few days.
"I don't know exactly because he has been tested like all of us six times in the last 10-15 days so it is negative. Today I think he was negative too but the protocols says in some cases isolate, and in other cases we still play football.
"He was not able to play today."
Aguero becomes the ninth first team player in three weeks to be forced to isolate, after Jesus, Kyle Walker, Ederson, Ferran Torres, Tommy Doyle, Eric Garcia, Cole Palmer and Scott Carson.
Ederson was fit enough to return to the squad against Birmingham, while Torres and Doyle are back in training.
