It seems like the Leafs have some sort of reported interest in every prospect near the top of the 2015 draft class.
Reports have surfaced that the Leafs have interest in not one but all of Mitch Marner, Ivan Provorov, Mathew Barzal, and most recently Mikko Rantanen, who the team reportedly flew into Toronto following the NHL Scouting Combine. Presumably, top picks Noah Hanifin and Dylan Strome are also in the conversation.
But there's one player, ranked sixth (ahead of Barzal and Provorov) on my top 60 prospects ranking for McKeen's Hockey that hasn't been mentioned in connection with the Leafs (yet): Zach Werenski.