Sabres will be dangerous

Boston isn't doing that

If Levi comes in as advertised, Buffalo isn't doing that.

I disagree with the above, if nothing materializes in the Bruins center market, converting Mittelstadt is worth moving Ullmark. Carlo move is tough and UPL isn't really of interest to the Bruins because of Swayman, but if it's swapped for a good prospect or a 1st round pick, it may be worth it for the Bs, but the trade of Mittelstadt for Ullmark can be built around.

agreed, but maybe Krebs instead of Middlestadt too? might not be any additional return, but i think works better for Bs.
Ullmark under good contract at his current level of play (IF) he waives, carries them in to Levi end of next year. Let's them take the Ullmark/Swayman 1a/1b type route

Possibly. But if Levi comes in and does what we think he can do, why would the Sabres take on Ullmark? If thatvis the case, even of for just one year, that is money better spent elsewhere imo. Carlo everyone gets. One of the best stay-at-home D in the NHL. Even this fit depends on Jokiharju imo..... this is the make it or break it year for him in Buffalo.

Just a deal that works if a certain set of circumstances fall in place I think.