Werder Bremen star Diego was involved in a dressing-room bust-up with team-mate Aaron Hunt after last week's UEFA Cup first-leg defeat at Rangers, the German striker has revealed.
Diego, who is already serving a three-game domestic ban after body-checking an opponent at Eintracht Frankfurt last month, clashed with Hunt after last Thursday's 2-0 reverse at Ibrox.
Hunt told Sportbild magazine: "That is true. There had already been a discussion during the game."
Bremen sports director Klaus Allofs added: "I do not know of a player who never had an argument with his team-mates."