Is there a path for Erik Karlsson to join the Toronto Maple Leafs?

After last season's disaster, the Toronto Maple Leafs appear to be pulling out all the stops to become contenders once again. The Leafs have already acquired a two-time Stanley Cup-winning goaltender and one of the league's top-scoring defencemen, and they may not be done. According to Sportsnet's Elliotte Friedman, the Leafs could have another big-name defenceman on their radar for the upcoming…