VIDEO: 'You are here?!' - Pep Guardiola savagely mocks Jack Grealish as 'brainy' Man City star surpasses expectations in unique 'clap' knockout pre-season training drill

The City boss put his players' reflexes to the test by having them clap every time he bounced a ball off off the ground. If they clapped when he faked the bounce, they were eliminated. Grealish seemed to exceed the coach's expectations, though, by staying in the game for a few rounds.

Jack, you are here?!" Guardiola said with some surprise after many of his team-mates had been eliminated.

"Brainy," Grealish responds.

"I didn't expect [that]!" Guardiola then quips at the winger's expense.

In the next round, however, a disappointed Grealish trudged off as he was knocked out after clapping when Guardiola didn't bounce the ball.

The Premier League champions will continue their pre-season tour of the United States with a match against AC Milan later this week, which will be followed by meetings with Guardiola's former side Barcelona and then Chelsea.