Only thing I can see Kanter being better at is running the floor, and a better mid range game. As far as rebounding goes, 2.5 years ago Al was averaging around 11-12 a game. I don't think Kanter will average too much more than that quite frankly, especially with Favors and Millsap on our team. Post moves? Al. Defense? Must wait until we see him play regularly; defense and assisting are mostly a guessing game as of this point.
Rebounding is one of the top sides of Kanter's game and he is obviously better on the defensive end, at least he is smarter.
The best thing Big Al does is his post savy skills. And as we have seen in eurobasket, Kanter will be something close to him worst case. Maybe he should improve his finishing under rim but he has very good foot games under the rim.
I dont even talk about the team chemistry stuff, which Big Al will mess unless he is given the franchise player role, but looking only in the court attributes , i dont see any reason not to trade Big Al while we have Kanter, Millsap, Favors and Memo on the team.
Well you would say, memo doesnt deserve 10 million pyear deal , and yes he doesnt, but its his last year and he may be in our mid term plans if he agrees a mid level contract. He can stay and provide help from the bench a few more years but Big Al will not accept such a role and he will ask even more money once his contract is over and we will probably not be able to pay since we will make new contracts with our young and talented players then. So instead of keeping him in the team 2 more years and see him gone without anything in return, it is more logical to trade and get something good while he has some trade value on the market.