Fulham striker Aboubakar Kamara was arrested on suspicion of actual bodily harm following a fight at the club's training ground.
Police were called to Fulham's base in Motspur Park early Monday evening due to reports of an altercation involving the French striker.
Sportsmail sources claim the clash also involved an on-site member of staff.
It is understood that having been banished from first team training by manager Claudio Ranieri for being a disruptive influence, Kamara arrived at the training ground on Monday intent on resolving his future with Fulham chiefs. But his visit ended with him being arrested.
A spokesman for the Metropolitan Police said: 'Police were called to a training ground in New Malden, shortly after 17.00hrs on Monday, 21 January to reports of a fight.
'Officers attended. One man, in his 20s, was arrested on suspicion of ABH and criminal damage.
'He has been taken into custody in a south London police station. Enquiries continue.'
In a statement, Fulham said: 'The Club is grateful for the swift attention and action by the Metropolitan Police immediately following our reporting of the incident on Monday.
The subject who was arrested is banned indefinitely from Motspur Park and all club activities.
'We will refrain from further comment but will stress that we will fully cooperate with any new or continuing investigation or legal proceeding in the name of providing everyone a secure and safe working environment.'
The incident is the latest controversy to have engulfed the 23-year-old in recent weeks.
Kamara was allegedly involved in another fight with team mate Aleksandar Mitrovic earlier this month during a team yoga session.
Manager Ranieri has frozen Kamara out of his plans, with the striker being linked with a move to Turkey.