While we don't particularly enjoy thinking about the Leafs parting ways with someone who has been a joy to watch hit unsuspecting forwards as hard as possible, it might just come down to a numbers game. As The Athletic's James Mirtle wrote in a recent mailbag, the Leafs are looking for more of a puck-moving presence on the blue line and that should then result in them moving on from one of the more defensively minded defensemen.