Based on your logic, lets hire Spalletti and EDF...
They maneged to do so with Roma ....!! (Collecting points and so close to win the league)
Sarri and 3 seasons with Napoli and yet doesnt learn how to rotate and still beaten by Max many times even with Higuain with him.....
If you followed the league closely , many critics blame the failure to win the scudetto to his week tactical ability .... starts well... then mid season fail miserably and the funny part it is exact the same with Chelsea ....
Same crtics in Italy and England ...same losing patterns happened during those 4 years....
He lacks the tactical intelligence ....
What you expect from 60 years old fart never won something in his life !!!!!