To whom? To Boston with a 3rd for Brandon Carlo. This kid is 20, developing, and as a rookie holds his own paired with Chara against top competition. 

His advanced stats are also really good - excluding assists, he looks good compared to an archetypal #1 defenseman: https://public.tableau.com/shared/9989KNP2Z?:display_count=yes

I think that Sakic needs to forget looking like he won the trade and go out and get the best player back in the trade. Johnson, Barrie, Zadorov, Carlo is a solid top 4 with incredible potential