I think GSW is moving as early as now, planning to take Siakam with a healthy Klay and Steph not bad chasing to regain the thrown.
Just a rumor but if consider, looks like the Toronto Raptors will now destroy their championship lineup. Like the possible trade though as after their 2019 championship and the departure of Kawhi Leonard, they now remain silent and not a competitive one in the Eastern Conference alone.
But what it will cost for the Warriors? It's a risk if it involves shipping their possible valuable rookies on the draft night.
If they will pursue Siakam then I think that the Warriors might return to a small starting lineup like what they did in their championship years.
I don't think too that they will trade Green and with a healthy Klay and Steph, the team will be a playoff contender again for the next years as long as they are healthy though. Adding Siakam is additional scorer and at the same time defender. There are some rumors around GSW like trading Wiseman or getting Simmons etc.
Now regarding the Raptors, there are some rumors too that Lowry might sign to Lakers or even 76ers or Clippers. Lowry has been the future of the team ever since including Kawhi and when Kawhi left the team, they aren't as strong as they are when Kawhi is still there. The Raptors might enter the rebuilding phase this next year possibly especially when they will trade their franchise player.