Danny Cipriani is in hospital after being hit by a bus in Leeds on Wednesday night.
Cipriani's club Sale Sharks have confirmed that he suffered concussion and was being X-rayed overnight.
Newspaper reports claimed that former England fly-half Cipriani was on a night out with his Sale team-mates when the accident happened. Sale, though, have not released any further information.
The 25-year-old was involved in a collision with a First Bus vehicle, and a spokesperson for the company said: "A pedestrian suddenly ran into the road and collided with a First Bus travelling at a safe speed.
"The police have investigated this incident and have reported that First and its driver are not at fault.
"We understand the pedestrian is an England rugby international, and we wish him a speedy recovery."
Cipriani, who has previously played for Wasps and the Melbourne Rebels, is nearing the end of his first season with the Aviva Premiership club.
The Sharks, who were involved in a fight against relegation for much of this season, are now safe in English rugby's top flight.
They have one league game left this term, at home to Wasps on May 4.