If Montreal were going to trade Petry, they would have a lot of interested parties and they certainly wouldn't require retention, so that likely would rule out Toronto as a landing spot. Unless the Leafs were going to overpay in terms of assets in order to get retention, I don't see any chance of a transaction between these two clubs.
While I'm not sold Bergevin is considering selling him in the first place (very remote given he's been on record saying he expects it was a one-off year), I don't necessarily agree Petry would net the type of interest that teams would be lining up to offer their 1st rounder as a framework. How many suitors would be in on Petry, and would be willing to offer that without retention? Only two teams I can think of are perhaps Dallas and Florida and I'm not sold either is giving up their 1st or equivalent in a package.
That's not to say management on our end would be willing to give up picks regardless. Everything you hear about Nylander, Marner, 1st's being moved has from day 1, always been purely media or fan driven as per this market.
Leafs weren't willing to move their picks for Hamonic, Vatanen, among the well-documented cases. Dubas has been on record saying he has more faith internally than others, and his actions- by going after empty wallet UFA's (Tavares, CDH) and the relative scarcity of teams willing to move their 1st in recent times are all indicative that such a move, for both parties, is remote. But we're not discussing the possibility of either team having practical interest.
I'm not saying Petry should fetch more than Hamonic. I would prefer two 2nds over Kapanen/Brown and the offered value looks good to me but trading Petry right now sounds like a scary idea. Seriously when you look at our current D corps without Petry, it's so bad we might as well forfeit every game until Weber comes back. Obviously if somebody overpays enough, you don't pass on that but this is not it. Why can't we just wait at least a couple of months?
That's a fair take but should be noted we're just talking hypothetical on here regardless. I think the most rational of us on here know the window has mostly passed for this caliber of move (those windows usually being around the draft- ideally before, and the TDL).
As for Kap/Brown or two 2nd's debate, I would prefer Kap/Brown over the two 2nd's so that's not an issue.