Real Madrid captain Sergio Ramos clashed with Marcelo at training on Saturday.
During a small-sided match and, according to eyewitnesses, Marcelo celebrated his side's victory in a way that did not sit well with Ramos, who was on the opposing side.
The Brazilian stated that he always celebrates in this manner, but Ramos did not disguise his anger, says Marca.
Their teammates intervened to stop the conversation from escalating, even if it only lasted a few minutes.
Real Madrid won 4-1 at Real Valladolid on Sunday.