Been seeing a lot of trading Chiarot after last nights game, but Pettersson isn't an upgrade and arguably a downgrade since he isn't nearly as physical. The Habs also can't take on his term. In this scenario you'd only have ~$3 million to sign Suzuki, Evans and Romanov, then Caufield the next year.

Combine that with downgrading from Lehkonen to Archibald and its a net worse team, in my opinion.