Ronaldo's reaction to being substituted in Man Utd win over Brentford - Petulance or passion?

The Portugal international was substituted against Brentford before he could manage to score and was not happy about leaving the pitch. When the fourth official's board went up in the 71st minute at the Brentford Community Stadium on Wednesday night, and the number seven flashed up, Cristiano Ronaldo stood with his...