Not dragging anyone through the mud, just saying 13.5 doesn't seem like a discount to me. Maybe if it was for 8 years but my understanding is that the term will be much shorter.
So far our time with him hasn't led to any playoff success so I'm not feeling particularly sentimental about him myself. And if he wants to be the highest paid player in the world after the mediocre season he just had, it may well be that we need "our time with him" to end before we can start thinking realistically about going deep in the playoffs again.
He's a great player when he's on and when he's healthy but when he's not, he's nowhere near worth that kind of cap hit. And no matter what, I'll always be a "crest on the front" kind of guy and the names on the back will always be a very distant second to the team. And I don't see 13.5 million on a short term for this guy being a positive for the team, it feels more like a premium than a discount.