Manchester City manager Mark Hughes is keeping his fingers crossed that Robinho will be fit for Monday's Premier League trip to Newcastle United.
The Brazil forward picked up a thigh strain which resulted in his substitution during the second half of Wednesday's goalless World Cup qualifier against Colombia in Rio De Janeiro.
The club's record signing is not due back in Manchester until Friday and Hughes is reserving judgement on his injury.
"Robinho will be travelling back from South America today and will be back with us on Friday, so we will have to wait before we can take a look at him and make a judgement on his injury," he told the club's official website.
Meanwhile, the £32million British record signing has admitted he may have aggravated the injury after attempting to play on.
"I was knocked on the thigh and it hurt a lot at the time," he said.
"The area where I was fouled became inflamed so I thought it was better to ask for a substitution.
"Maybe I should have left the pitch even earlier."
Elsewhere, winger Martin Petrov is also struggling with a knee injury picked up in the first half of Bulgaria's goalless draw with Georgia in Tbilisi on Wednesday.