There was certainly a pantomime villain in the house at Stamford Bridge at the weekend when Chelsea took on Arsenal in the Premier League. Kai Havertz was not the most popular figure in West London as he looked to make an impact up front for the Gunners against his former side, with supporters making their feelings clear on him. The German was booed pretty much every time he got on the ball, although looked as if he was going to get the last laugh after finding the net in the first half. John Obi Mikel not impressed by ‘disrespectful’ Kai HavertzThe goal, which was eventually disallowed for of…