If there is a significant change in one or two years then a bridge makes sense for both sides to reevaluate worth. You'd hope that Chevy has a long term plan with him, but it wouldn't surprise me if the number he bargains with is lower, based on a mediocre season, without a top impact that players before him had at the end of their ELCs.
Chevy has to be mindful of what the future contracts of Vilardi and Samberg look like in a longer term scenario, Vilardi's ceiling as a top PP contributor might be high. Then you have to sign or replace Pionk with more than a prospect who likely has to develop into a 3rd pairing NHL d-man before climbing the ranks. And Ehlers if he gets re-signed. The number for the 4, including Perfetti, is probably the mid 20 millions. Pionk or a Pionk replacement is another $5-$6 million, unless you go prospective in a trade. So there's going to be some movement to stay within the Cap, with core players.