Ibe was robbed at knife-point when thieves rammed his car. The footballer had his watch stolen after his car was struck in Surrey Quays, south-east London.
Scotland Yard police said detectives were investigating the attack on Ibe.
A Met Police spokesman said: "One of the suspects threatened the victim with a knife before stealing his watch. The victim was not injured. At this early stage, officers are investigating whether the suspects intentionally collided with the victim's car."