Police will speak to Todd Carney about a fight in Cronulla on Sunday night, but say the Sharks player was not physically involved.

A friend of Carney has been charged with assaulting two men in Sydney's south.

The men, aged 18 and 19, were punched in the face outside a fast food shop on the Kingsway.

Police allege a 28-year-old friend of Carney's confronted the pair after they made comments about the Cronulla Sharks.

"What exactly was said I'm unsure," Chief Inspector Rick Johnson said.

"However it has escalated to the point where the offender has struck the two victims.

"One victim received a loosened tooth while the other suffered facial injuries."

The 28-year-old man was arrested in a bar shortly after the fight.

Police said Carney would be interviewed as a witness.

"There is no suggestion that Mr Carney is an offender," Chief Inspector Johnson said.

"He will be spoken to today (Monday) but there was no suggestion he was involved in the fight.

"He will simply be spoken to as a witness in the matter."

On Twitter, Carney said he initially spoken with police on Sunday.

Hello fans and friends just spoke with the cops I was not involved in no fight tonight. More details to come tomorrow — Todd Carney (@tcarney06) March 23, 2014

The 28-year-old man has been bailed to appear in court next month.