Manchester City ace Riyad Mahrez has handed manager Pep Guardiola a preseason injury concern after their friendly win over Bayern Munich.

Mahrez was forced to hobble off with what looked like an ankle injury.

But the man who replaced him - Bernardo Silva - struck twice to inspire a super comeback for Manchester City as they won 3-2.

Bernardo's second goal was created by new signing Adrian Bernabe.

The former Barcelona teen showed some nifty footwork to tee up Bernardo to score his second of the game with a crisp strike.