For the Raptors, this is a wise bit of business.
They were able to get McCaw for a minimum salary for the remainder of the season,
McCaw showed flashes in a limited role for the Warriors in his first two seasons
and is yet another young wing with plenty of length for the Raptors to add to their deep rotation.
If he helps them, great. If he doesn't, they didn't lose anything and can just let him walk in the summer.