Manchester City face an anxious wait to see whether Riyad Mahrez will be fit for the Community Shield.
The £60million club record signing hobbled out of the 3-2 friendly victory over Bayern Munich in Miami.
Mahrez had picked up an ankle problem five minutes in and was unable to run it off.
'I don't know,' Pep Guardiola said when asked about the extent of the issue.
'I wasn't in the locker room. It was his ankle. We will see, maybe it is not a problem.
'I'm concerned for many things, for injured players, players who are still not here but I am so satisfied for what all of the guys on the tour have done.'
Leroy Sane sat the final tour match out, remaining on the bench despite playing during the defeat by Liverpool in New Jersey.
'His physical condition is still not good,' Guardiola added. 'He has to train a little bit more but he is not injured.'
