The Clippers do this because, Collins brings youth and athleticism to an aging team. He can play 4 and in small lineups play stretch five. He’s their perfect fit.
The Jazz do this because Collins is a misfit with their team. This way they get young pieces and maybe a valuable swap 6 years from now.
The Pistons swap out Joe Harris for a much needed vet and locker room guy and Terrance Mann who is good in small minutes.