Neymar and Nelson Semedo have been involved in a training ground clash during their team's tour of the United States.
Recent reports have linked Neymar with a world-record transfer to Paris Saint-Germain, despite the Brazilian playing a full part in his club's pre-season schedule.
However, images from Splash News appeared to show the forward having to be restrained by teammates after reacting to a robust challenge from the right-back, who has only just signed for the Catalan giants.
Semedo moved himself away from the situation, while Neymar continued to question the physicality of the Portuguese defender before walking out of the session.
Barcelona are currently preparing for a meeting with arch rivals Real Madrid, which takes place at the Hard Rock Stadium in Miami on Saturday night.
Despite reports over Neymar's future, boss Ernesto Valverde remains confident that he will stay at Camp Nou for the new campaign.
