Anything that suits his team, the squad of players he has. It is a complete myth he plays some dead, all-out-defense football. He averaged more goals per game at Juve than SAF did at United or Poch at Tottenham.
We changed literally every year and he changed how we played.
First year was a narrow 4312 with 4 classic midfielders, lots of possession, moving the ball around etc.
Second year tried that again, was awful, changed back to 352 then to 451 and struck teams on counter attacks.
Third year tried again with 352,