Bosh I could see, maybe, if Miami struggles and they feel like they should try to get something for him while they can.
Love ... nope. Don't see it. I don't see Indiana trading George, either. Just doesn't make sense.
Cousins ... seems like the Kings could be headed for a trade at some point, but I feel like they'll wait until they've got their new arena built. Sometime next year, or the following summer, is when I'd expect Cousins to get traded.
I like Bosh a lot, but he's a pretty clear cut #2, especially at this point in his career. So I wouldn't want the Celts to pursue a trade for him unless they already had an alpha dog in place.