I don't know how good a coach he is, but it's going to be a tough job. He was hired after 4 other candidates said no because they either wanted control over coaching staff choices or were too cheap to pay reasonably. My perception of him (he's been at newly promoted Beerschot so far this season) is that he's a good coach who's been getting results playing attacking soccer with limited talent (a bunch of Belgian 2nd stringers with a handful of fringe internationals from places like Austria, Japan and Mali). They had an excellent start to the season before the club got hit badly by a covid-19 oubreak in december - they are currently 10th. The dude is very ambitious though.