What will help the Leafs in negotiations is that MacArthur loves being a Maple Leaf. I think he considers the logo on his chest as a matter of pride. However, he wants to feel appreciated. It was said that he didn't like that Atlanta did not think he was worth a pay raise.
MacArthur is likely right up there with Schenn in Burkes priority list for getting players signed next off season. There is no secret to MacArthur putting up these big numbers other than he works his arse off,and is a very good player.
A number between 2.8 to 3.3 million @3 years wouldn't be surprising to me.
At the same time, Mac is playing at almost a first line clip. Any guy scoring 60+ points is a marginal first liner. Down the road if we can count on him to put up 50 points on the second line I have no issue throwing him 2.5 mill/year
Not to mention the guy's compete level. You can tell he hates to lose. Could be a great leader on the team.