A guy like Jake Gardiner might be available at some point from the Leafs. He has inconsistent periods, and does cough the puck up (as do so many who carry the puck as much as he does), but he's put up 50 points this year, and when he is on his game, is a very good PMD, offensive D. He is elite in his passes out of the zone, including many tape to tape two and three zone passes this year. Him setting up a streaking McDavid would be scary. He wasn't great earlier in the year, but he's been fantastic in 2018.
The reason he might be available, is that his play has been good enough to warrant a decent pay increase. He's going to warrant a $6 million contract, maybe more on the open market, and I'm not sure we've got the space, plus Travis Dermott has emerged and looks to be a very good LHD for the future. I'm not going to suggest a package that I think might work, but he might be on the market at some point.