It's interesting that Friedman specifically mentioned Nashville as having interest in Colton... Makes me wonder if perhaps something could be done around Colton and Sissons @50% (~$1.4m X2).
Filling the 3C spot for $1.4m would conveniently leave just enough cap space to sign Drouin at $4m AAV and ice a 22 man roster, as shown in the AGM below.
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Sissons doesn't have the offensive numbers Colton does, but he's better defensively, PK's, is good on draws, and is a right hand shot so overall he'd be a much better fit for what Bednar wants from his 3rd line. Lehkonen-Sissons-O'Connor would definitely be a pretty good defensive line.
Just a question of what value of picks it would take to make that worth it for both sides.