The Bulls were clearly tanking last year. But Butler just had another knee injury. He only played in 59 games last year and has so much wear and tear from playing under Thibs that the idea of signing him to a 5 year max scares me. Demar is under a really good contract (same as LMA) and it's shorter so we can move on from him sooner if need be. Raptors talent wasn't really that special last year tbh, but their chemistry and camaraderie was so good that they finished with a higher record than 3 teams with equal or more talent. And Demar was a big reason for that.
Butler doesn't mentor anyone young and is notorious for causing drama with youth in the locker room. I mean you know you're a bad leader when Rajon Rondo looks like a good one compared to you. He has had no playoff success to speak of either (it's sad when Demar has more playoff success than you). WE are better off this year with Demar since history suggests that he will play in almost every single regular season game, he will play well during those regular season, he is a good teammate/ team player, and will cost the Spurs less money and prospects (DJ or Walker).