Tottenham, Chelsea and Arsenal all have managers in place who are highly regarded in world football at the moment. Mikel Arteta has his Arsenal side top of the Premier League and having won an FA Cup with them, has tasted success. Ange Postecoglou has impressed at Tottenham so far. Spurs are well in the mix for a top four spot and the Aussie has them playing good, attacking football. Over at Chelsea, Mauricio Pochettino seems to divide opinion among supporters. But he is well-respected, having managed PSG and Tottenham prior. But just who is the best manager out of the three? Well, Graeme Soun…