The Leafs won't be landing Larsson with that offer. Seattle isn't going to be inclined to trade such an important piece of their team, so it'll take an offer too good to refuse to get them to seriously consider pulling the trigger on a deal. A package of late first and fifth round picks doesn't qualify as that on its own, let alone with Seattle sending picks back to Toronto on top of it. The Leafs would have to offer quite a bit more to get the Kraken to actually listen.