I don't disagree with the comments on Kornet and his limitations, he is a fine 3rd string big, a little limited to be a 2nd string (meaning regular rotation) big, but that is what we have right now. You can go small and then Brissett becomes our 3rd big in a way. He is probably better than Kornet from a pure talent or production standpoint but he is at best a swing, not a true big (PF). Wenyen Gabriel is probably more of a PF, where Kornet is more C, that is fine, but I am not sure Gabriel is any better than Kornet, meaning more 3rd string than 2nd string.
Rob Williams was a starting level big, Grant really more of a second stringer, first big off the bench is probably his but suited role. That is what we need to replace. Horford can be the starter level guy if need be. It would be great to find a big who could start, be the 5th or 6th best guy, but even someone at the first big off the bench level would help a lot. I felt we were OK with Brissett replacing Grant when we had Rob Williams plus Porzingis and Horford, but now the position feel really light.