Juventus coach Maurizio Sarri and Cristiano Ronaldo appear to be already butting heads.
During today's defeat to Tottenham, the pair appeared to have a terse exchange after Sarri chose to substitute Ronaldo.
The Portuguese had scored three minutes earlier and seemed in good spirits as he left the pitch before Sarri made a comment to the No7.
Ronaldo's manner changed abruptly as he shook his head and replied to his new coach.
Watch below:

