Tony Allen is anything but comparable to Jimmy Butler. Now that's laughable. He has nowhere near the offensive, rebounding or passing skills. He doesn't draw fouls, and knocks down those foul shots at a high rate. He's not as athletic, or quick, and let's not forget the fact he's 7 YEARS OLDER. The only thing comparable is their defense and Butler still tops him at that.
Alec Burks, who wasn't even a regular starter last season, got a 4/$48m extension and you're telling me that Butler is in the $4-6m range? In the current market, Butler is worth just as much, if not more. He's an All-NBA defender, arguably the best perimeter defender in the league. He's quick, athletic, and tough as nails with an endless motor. He is a difference maker on the court, who has shown the potential to be one of the best two-way wings in the game if he remains consistent. All this and the guy was the last pick in the 1st round in 2011.
If he has a stellar year, which I believe he will, the FO is going to look silly not agreeing to that deal. Butler will get a max offer from another club, especially with a projected significant rise in the salary cap.