Pep Guardiola is about to enter his ninth season in charge of Manchester City. At the end of his previous campaign, the 53-year-old saw his become the first team to win four consecutive Premier League trophies. After then having City complete a pre-season tour of America, Guardiola then took his player to Wembley Stadium once again for another Community Shield clash. Facing off against their close rivals Manchester United, the City boss was spotted looking rather angry with one particular thing he saw towards the end of the first half. This then led to one pundit and former United player shari…