Queen Park Rangers spokesman Ian Taylor said:
"Joey Barton was involved in an incident in Liverpool city centre in the early hours of Monday morning.
"Barton was on his way home from a night out with his girlfriend when two men sang offensive chants and then proceeded to hit the Rs midfielder.
"Police were immediately on the scene and arrested one man.
"Barton decided not to press charges and left the scene with his girlfriend soon after.
"The club will be making no further comment."
More top news
Newcastle City Council leader tells ITV News Tyne Tees that the city can settle "several dozen" child refugees from Calais' migrant camp.
ITV News Tyne Tees has learned that 3 councils in the North East will do their own devolution deal with Westminster.
The Environment Secretary says she expects improved flood defences at the Foss Barrier in York to hold up in future.