#4 Key players losing their form
One of the biggest issues in Ancelotti's debut season was the drop in form of key players - most prominently, Thomas Muller. The German international scored a stunning 32 goals in 49 games under Pep Guardiola during his final season at the Allianz Arena.
Under Ancelotti, Muller has struggled to recapture any form that saw him become one of the most potent and clinical strikers in European football. A shockingly poor return of 9 goals in 43 games saw Muller being questioned arguably for the first time in his near decade long career with the German giants.
The style of football introduced by Ancelotti could be described as more efficient on occasions, but players like Muller and even Franck Ribery have seen their goal return, general contributions and overall performances fall off since his appointment last summer.
An argument could be made for Ribery ageing and declining in ability; however, the question must be asked why Carlo refuses to allow young players the opportunity to shine.