That's what I worry about with him. He has a focus on conservative possession in order to control the game similar to Martinez and the fans hated him for it, though the fact that that style didn't result in good defensive performances and his grating positivity were factors as well of course. Now obviously that style can result in good defense, just look at van Gaal's United (I'm not going to use De Boer as an example here, because any Ajax coach is going to have a good defensive record in Holland), but I think that even then the fans might still hate the way the offense looks after Martinez. De Boer's also more of a straight talker than Martinez by the way and because of genetics he often looks like he's in a bad mood, which might be a welcome change as well...