Max has signed for French Top club Castres and will leave Glasgow after four years and 60 appearances for Warriors.
Max says his decision to head for France was made even tougher by the strength of the bond with his fellow Warriors which was increased in the wake of the harrowing neck injury that brought his brother Thom’s Glasgow and Scotland career to an end last year.
Max also revealed his gratitude to Warriors head coach Sean Lineen for giving him his big break in pro rugby.
Max said in the Evening Times: “It has been a really tough decision to make and probably even more so in the wake of the injury to my brother Thom and the way it has brought me even tighter to the guys at Warriors.
“I have had four great years in Glasgow and made a lot of close friends who will stay with me for life and many of them wear the Glasgow shirt.
“I think it really came home to me what a great group of guys they were after Thom’s injury. That meant that I spent more time alone with the guys and the support I got from them during an emotional period was fantastic.
“On top of that, although I got a grounding in pro rugby at Harlequins, Sean Lineen was the man that gave me my chance and he has been a massive influence and support throughout my career along with the other coaches at Glasgow like Shade Munro and Gary Mercer.
“But even though it has been tough I think it is time for me to seek fresh challenges and France is a great place to play your rugby.
“The outstanding memory has got to be the Heineken Cup win over Toulouse in France two year back. To have scored a try and claimed the man-of-the-match award in what was our greatest ever European victory will be something I will always treasure.
“I don’t know if I will ever play in a greater team performance than the one the boys produced that day at the Stade Ernest Wallon.
“I still have a good few Glasgow games ahead of me after the Six Nations and I am determined to make every one count.”