As you say, critisiscms of Sarri’s stubbornness from fans is one thing, but the club would/should have known what they were getting when they employed him. If they didn’t want someone with a fanatical devotion to a way of playing, then they should never have hired Sarri. If they knew what they were getting and will give him the time it needs for that system to come good, they’re going to need to give him at least a season, if not longer. And they need to back him in the transfer market (both incoming and probably even more importantly, outgoings)