Grant would be a seamless fit. Great offensive rebounder that can shoot and pass effectively enough. Paired with Poeltl, and allowing Keldon to slide to the 3, and Vassell the 2, that lineup would be offensively and defensively superior to anything this team has run out in years.
However, you don't trade much of anything for him because almost assuredly, you're only getting it for one year, outside of some pre-trade assurances to the contrary.
So, given all the other gaping holes to this team, and the possibility of ameliorating those deficiencies in this draft, it's just dumb front office work to throw around FRPs for that one year rental.
Anyone saying he wouldn't make this team better though is smoking some good .