The Brazilian duo were filming outside of the United training ground when the Portuguese international calls over to them and tells them to stop filming and start training.
The encounter was captured as part of Telles' 'A day in the life' video with Brazilian football marketing agency O Clube Football, with the footage appearing on social media this week.
In the footage, United's Brazilian duo are stood outside Carrington when Fernandes spots his team-mates from afar and calls out: "Stop being such 'ballers'!"
The Portugal international then says: "You are here to play football, not film it!"
Before telling the camera crew to: "Film my d**k."
Fred and Telles, who are seemingly bemused by Fernandes' aggression, tell the midfielder: "Chill out you f****r!"