Around May 5, 2024, after the playoff loss:
Athletic: Mitch Marner wants to remain with the Maple Leafs: ‘That’s the goal’
Right after the playoff loss, he states he wants to remain with the Leafs and will start thinking about a contract extension "now"
Treliving fires Keefe May 9th
Treliving hires Berube on May 17th.
Treliving then turned his attention to hiring associate coaches.
Marc Savard is hired May 27th or so, etc
So there is not a lot of time to haggle with Marner in May
Around June 4th, Treliving said. “Mitch controls a lot of this whole thing. If there’s a way to make our team better, we’re going to do it. But we’re certainly not going to make a trade just so we can pound our chest and say, ‘Look, we’re different.'”
By June 4th, Marner's GM is kicking around trading Marner in the media less than a month after the playoff exit and within only a few days of any possible meaningful discussions because of the coach hires.
So Marner's contract negotiations went terminally sour shortly after the coaches were hired? I don't believe that.
I find this claim that "the Leafs made every effort to re-sign Marner and were just rebuked." very hard to believe before the trade talk started before June 4th, 2024. That trade talk equates to the Leafs GM publicly saying "In our view, you Mitch, are not an essential part of our plans to win a Cup." That would have a serious chilling effect on negotiations. It was not a slip up. Treliving kept bringing it up over the summer.
That drives the player to listen to his agent because his GM is publicly ambivalent on whether Marner plays another year in Toronto or not and has told the whole league Marner is available as far as the Leafs GM is concerned.
GM Treliving did this to himself and his team. Marner put up his 102 pts and 9 years of top notch stats. He can play for any team in the league he wants and be paid handsomely to do so. His GM turned on him in public. There is very little Treliving can do about that now - damage is done. The best way for Marner to punch Treliving in the nose for his behavior is to leave for nothing. The Leafs GM is clearly not innocent here.