Joey Barton will not appeal against the 12-match ban he received from the Football association.
The QPR captain was red-carded for elbowing Manchester City's Carlos Tevez in the final Premier League game of the season about a fortnight ago before kneeing Sergio Aguero and then attempting to headbutt Vincent Kompany.
The FA decided to hand out a harsh punishment to Barton which has been accepted by the midfielder.
"The QPR midfielder will not appeal against the independent regulatory commission's decision made on Wednesday and he and his team are now working in full cooperation with the club to assist in the internal investigation.
"The club expects the investigation to last at least two weeks.
"During this period, no one from the club or Joey Barton himself will make any further comment.""Queens Park Rangers Football Club can confirm it has now started a full internal investigation in relation to Joey Barton's dismissal and subsequent events against Manchester City on the final day of the 2012/13 Barclays Premier League season," read a club statement.
