Firstly, look at the players he has got rid of - Lukaku, Mata, Salah, Schurrle, De Bruyne etc. Before he went there they had assembled - with Hazard, Courtois, Zouma and others - the most talented group of young players in Europe, with a plan of not having to continually dip into Abramovic's pockets, not falling foul of FFP (before City and PSG wrecked it), and having a fantastic team for years and years. It was a brilliant plan, only falling apart when they got Mourinho in and he jibbed most of them off in order to sign older, less talented players for more money.
Secondly, look at the fights he has picked all season - not only Carneiro/Fern, but subbing Terry, keeping Ivanovic there even though people were ragging him every single match, continuing the row with Wenger. If he was winning every week you could understand it, but he isn't.