The Grizzlies need a good rebounding center so Jaren can play the 4. Jakob Poeltl has been a top 10 center this season. The Raptors will want to sell high on Jakob Poeltl, they get back a Canadian player in Brandon Clarke (for salary) and a good young player in GG Jackson. If the Grizzlies don't like this trade. The Raptors would likely do it for 1 first round pick instead of two.