Joey Barton could be in trouble after police were called to investigate reports that he assaulted Barnsley manager Daniel Stendel following Fleetwood’s 4-2 defeat at Oakwell on Saturday.In a since-deleted tweet, Barnsley player Cauley Woodrow claimed Barton left Stendel with 'blood pouring from his face'.“Firstly @ftfc to have a manager that can physically assault another manager in the tunnel is disgusting,” Woodrow wrote.“People like you don’t deserve a place in the game of football, you are foul.”More details have since emerged from eyewitnesses, with suggestions that Stendel lost two teeth after being headbutted and punched by Barton.

Per The Sun, the former Manchester City and Newcastle United midfielder chased Stendel down the tunnel at full-time following an argument sparked by Fleetwood’s Harry Souttar being sent off.

The Fleetwood boss lost his rag after Stendel called him a ‘f***ing scally’ in the tunnel.

Barton's 2011 tweet looks awkward

“Barton headbutted and punched him and put his hands around this throat,” one witness said.

“Nobody could believe what they were seeing.”

Of course, it’s not Barton’s first controversy.

This is a man who has served time in prison, assaulted a teammate, and been handed a 12-match ban for violent conduct.

Yet Barton attempted to portray himself in a different light in 2011 when he posted a tweet asking why people resorted to fighting to resolve issues.

“Why do people always want to solve any conflict with a fight? As a pacifist, I find it incredible......... #mindboggles,” Barton wrote on Twitter.

You can see why that tweet has resurfaced now.

Barnsley have confirmed that an incident is being investigated by South Yorkshire Police.

“The Club can confirm there was an alleged incident in the tunnel area that took place following the conclusion of today’s match, which South Yorkshire police are currently investigating,” a statement read. 

“The Club is assisting the police with its enquiries and, as a result, we are not in a position to make any further comment at this time.”