Kevin De Bruyne was left out of Manchester City's squad that defeated Fulham at on Sunday after he picked up an injury.
City manager Pep Guardiola said pre-match that the Belgian' doesn't feel good' but didn't specify the nature of the problem or how long he'll be out for.
'He doesn't feel good. He has some injury and he couldn't travel. I don't know how long [he will be unavailable],' he told Sky Sports.
The 31-year-old midfielder scored twice and added an assist in City's dominant win over title rivals Arsenal on Wednesday.