Love is signed thru the 19-20 season, so another team would need to trade for him.
Houston already has cap and depth issues, so it's not them.
Same to some degree with Toronto.
As with most NBA things now, Boston and Philly in the best spots, IF they want to make the move, but I don't see either doing so.
Love is too much like Horford to end-up in Boston (at least this season) and the Sixers already have tons of shooters and value Defense.