Adrian Kempe is probably the most likely candidate and would be an incredible add for the Leafs. The speedy Swede carries only a $2 million cap hit, and unlike Forsberg and Hertl, he will be an RFA at the end of the season, meaning the Leafs can trade his rights, or try to re-sign him more easily than the other two. He can play either the right or left flank and kills penalties, where his speed makes him a constant threat for short-handed chances. He could be a very underrated candidate should the Kings be willing to part with him.