John Chayka has changed the Maple Leafs’ blue line in a pretty meaningful way already.The Leafs GM has given a max-term contract to Darren Raddysh, traded for 24-year-old Emil Andrae, and now dealt away Brandon Carlo.A Morgan Rielly trade may eventually follow.There’s a chance, small as it may be, for Chayka to blow all of that activity out of the water — if he can somehow pull off a trade for Zach Werenski, the reigning Norris Trophy winner who appears ready for a move out of Columbus.As predicted, Gavin McKenna goes No. 1The Athletic Hockey ShowThe Athletic’s Pierre LeBrun noted in his latest “Rumblings” column that the Leafs are the one Canadian team that Werenski, an American with a full no-movement clause, “might consider” in a trade.Do the Leafs have enough, though, for the Blue Jackets to consider a deal?I wondered about Werenski as a home run trade possibility for the Leafs back in May, with any and all trade conversations presumably starting with Matthew Knies.Knies could be attractive as the centerpiece of a deal for Werenski. He’s a soon-to-be 24-year-old American power winger who has shown a unique blend of offence, energy and physicality. Crucially, he is signed for another five seasons at a $7.75 million cap hit that should age very nicely.But Knies alone isn’t getting this done. Not for Werenski, who had 81 points last season en route to the Norris, and who still has another two years remaining on his contract at a cap hit of $9.5 million.So what else would the Leafs have to include? What else could they include?The Blue Jackets might look to the Canucks’ return on Quinn Hughes, another top-three defenceman in the NHL, for inspiration.For Hughes, who had only a year and a half left on his contract when he was dealt in December, the Minnesota Wild gave up Zeev Buium, a promising 20-year-old defenceman, Marco Rossi, a young-ish centre, Liam Ohgren, a young forward, and a pick in Friday’s first round of the draft.Knies is more accomplished, at the moment, than anyone in that deal and he’s under contract until 2031. Plus, he obviously still has room to grow. But much more is going to be needed in a deal like this.The Leafs could start by adding the first-round pick in next year’s draft that they got back from Colorado for Nic Roy. Another one of their top young players — Easton Cowan or Ben Danford — would likely need to be included too. Do the Blue Jackets insist on both? And if so, is that too much for the Leafs: Knies, Cowan, Danford and a 2027 first-round pick? In other words, the organization’s two best young forwards outside of Gavin McKenna, their top prospect on defence, and a first that figures to fall late in the 2027 first round.It feels like a lot — and it might not be enough all the same. (I wondered in June who would say no to swap of Werenski for the No. 1 pick. But that ship has presumably sailed.)