Joined: Jun 2017
Seems like there could be a few things at work here. First, the Leafs have really struggled with big bodies in front of their net. Polak is someone who, in theory, should do well in this area, and he's likely a better person to bring on than most because he's familiar with the Leafs system. Second, this does open up the opportunity to make a defensive trade, especially with Rosen/Borgman/Carrick. Third, Polak is a notorious gym rat, and along with his skills in front of the net, he may be able to teach some of the Leafs' kids how to better deal with that situation.
Low risk, low-to-medium reward. I don't see a huge issue with it.