Robinho has suffered a freak knee injury when clattering into a television camera during Milan's Dubai friendly.
The Rossoneri beat Al-Ahli 2-1, but the Brazilian had to be stretchered off in the final stages.
He did not spot the television camera on the touchline and fell straight into it during a challenge.
Robinho landed with his knee on the base of the camera and was stretchered off with strapping on the knee.
There is no word yet from the club on whether there has been any serious damage or if it is only a knock.
Milan need their forward, as Zlatan Ibrahimovic is suspended for Thursday's match against Cagliari.