That's an interesting option, we'd need some RHD help for sure. But the leafs just signed him in the offseason, unless he totally bombs out, I imagine they're not moving him anytime soon
There are many reports that he is no longer in the Leaf's plans (they have Timmons currently over him, and probably Benoit) so they obviously would want to clear his 3 million cap hit. I don't think the ask will be much at all. Maybe a 3rd or 4rth round pick, prospect, or in our case hopefully a roster player so we can give more opportunities to our Gulls prospects.
If we do make a trade like this, I really hope we greenlight the blueline to be very aggressive and accept the occasional defensive lapses. At the very least this year, we need our defensive prospects to establish themselves offensively so we can evolve and tinker with the defensive side the following year and pray for playoffs. I'd be more accepting of more 4-6 losses then the boring 1-3 losses... at least it would be more exciting to watch.
I could see the following pairings if we eventually trade Fowler (hopefully the earlier the better for developments sake, and I'm still praying its Nashville since they have interesting prospects like Surin and L'Heureux):
Lacombe - Liljegren (both entering their prime years (24-25), good skaters and would likely play 20-22 minutes a night, a great development opportunity for them, and they could be a strong offensive pair)
Minty - Gudas (our most important pair, our best defensive prospect and most physical/leader, but they would only play sub-20 minutes a game unless Minty breaks out)
Dumoulin - Luneau (Maybe the shut-down line, which would be a big development opportunity for Luneau, and they would play sub-20 minutes a game)
Then we would have guys like Zellweger/Vaak, or other prospects/waiver claims getting opportunities throughout the season. We'd still be one of the softest blueline in the league but at least we would have speed and skill (if they can establish themselves this year).