Comments from Wayne Bridge, "Gus has revitalised my love for football after I was in the wilderness at Manchester City." and "He got me to focus and enjoy my football. He is a top-class manager both tactically and on the man-management side, one of the best I have worked with"...
Doesn't really matter what you call it - the point still stands - how happy would any future manager be to take on a player who makes those sort of comments about their previous manager in public.