Maltese Falcon
Niko Kranjcar
For point 1 to stand you'll have to demonstrate that no managers ever make mistakes. We both know that even the best do.
Point 2 you're nearly there but not quite. There is certainly an argument to be made for the clogging style of football. Allardyce, Pulis, Hughes and to some extent Mourinho have all had their teams working above the sum of their parts that way.
But all the very top teams, the ones with sustained success are ones that control the game, the ones that keep possession, the ones that can break down stubborn teams and the ones that have more skillful players than the opposition. Sissoko doesn't fit that mould.
Scraping the barrel a bit, Scara... me thinks
Of course all managers make mistakes; but the successful ones recognise them. correct them and never repeat them; that is how they become better than the rest.
To state that the only reason an acclaimed coach like Deschamps consistently chooses Sissoko as a regular in his French team - leaving out other midfielders who are better to "keep possession, ...break down stubborn teams and... have more skill than the opposition" - is because of gross incompetence (the definition of repeated mistake making) is at best incredulous....