The Leafs like Brennan, as he enjoyed a tremendous AHL campaign with the Toronto Marlies in 2013-14. Therefore, the decision to bring him back is understandable. Still only 25, he may have an NHL future when all is said and done.

In Abbott, the Blackhawks receive a diminutive AHL scorer with very limited NHL upside (if any). Chicago has depth on defense, so moving Brennan makes some sense. That said, this was largely a swap of minor leaguers.

Brennan may still have a bit of fantasy value if he can make it back to the NHL on a permanent basis, though that's still a long shot. As for Abbott, he is not expected to see much NHL time during his stint in the Chicago organization.