Dallas gets much more difficult to play against in their own zone, as well as gets Lehtonen off the books without a buyout. Ottawa moves up to 3rd overall and gets a top flight RHD prospect.
Chicago gets rid of Hossa's massively problematic cap hit, while gaining a cost-controlled forward that can play any position and move up and down the line-up. Ottawa gets another top C prospect (to go with White and Brown), as well as a draft pick, as well as a good two-way forward that costs very little in real dollars. A conditional pick in 2021 could also be included, going from Ottawa to Chicago, if Hossa retires early, giving Ottawa an incentive to keep him playing.
New York gets upgrades at 2C and 1RW, as well as depth at RD if they decide to move Hamonic as is rumoured, plus a Kulemin cap dump. Ottawa gets a new partner for Karlsson, younger and cheaper players, and another draft pick. This trade can occur either before or after expansion, whichever the Isles prefer, with the appropriate changes made to the protected list below.
Ottawa protects: Hoffman, Turris, Stone, Pageau, Hossa (NMC), Nelson/Brassard, Strome/Ryan, Karlsson, De Haan, Phaneuf (NMC), and Anderson
Vegas selects Z. Smith, who can play up and down the line-up at both C and LW, at a relatively reasonable cap and term for a veteran.
Michael Stone and Pyatt fill out the roster, with Nick Paul and one of Honka, Harpur, and Chabot making the team as the 7th D.