Berube had a chat recently with Kevin McGran from The Star, and he affirmed the comments he made following the draft, that yes, Marner would be on the Leafs' roster for training camp.
GM Brad Treliving would not divulge too much infromation as to where the Leafs were at with Marner's contract negotiations, but for those who have seen him last season, he really praised Matthews and Nylander and expressed interest in retaining them long-term, but has yet to do the same regarding Marner.
Berube's no nonsense mentality and coaching style may not always sit well with certain players around the league, so it will be interesting to see how Marner reacts to and plays this upcoming season under his new coach.