Got to think that there's around 25 teams interested in a RD like Roy. I don't see how a trade for Roy would be cheap.
As for Debrincat, if he gets past this season, he only has his one year Qualifying Offer remaining and he could walk to free agency. Would think teams need to speak to him and/or his agent to see if they work an extension. I guess there would also be a market for him as a pure rental for the playoffs for a team wanting a deep run with enough cap space.
At any rate, he's not an inexpensive player with some term on his contract.
Sure, there'd be lots of teams interested in Roy. But you say that and then diminish the value of Debrincat, a 25-year-old two-time 40-goal scorer who, even in a down year, will come in at ~70 points? He's a much, much more valuable asset.
And Roy is a UFA at the same time as Debrincat, so he has the exact same "will he stay" concerns. How much are you trading for a 1-year rental of an 18 minute a night 2nd pairing defenseman? A 1st rounder? Maybe if you think he's the missing piece to your cup run. Not if you're going to miss the playoffs by 10 points.
While RDs are a rarer commodity, people on this board definitely have begun overstating their market value. Just last year, Josh Manson was traded at the deadline for a 2nd rounder and an average prospect, and then extended at a reasonable rate.
Remember when some thought Zub would need $5.5M+ on an extension because "he's a RD"?
That's a point that I have made as well in the past. A lot of teams had cap constraints because COVID produced a flat cap. So, as that situation disappears, the trade market will change as fewer teams will be needing to move players because of cap issues.
This upcoming summer, when we'll be in the market for a D, the cap squeeze teams will be facing will be as big, if not bigger, than in previous seasons.
It probably begins to let up after next season, but the cap is only going up $1M next year. Not much relief.