bad deal for Ottawa. we give up Karlsson, a good Defensive centre, our Best centre Prospect and our (aging) starter. we dump Ryan's contract, but take on even more bad money in the process in Sekera + Lucic. Bouchard is obviously amazing, and Puljujarvi still has potential despite being pretty mediocre so far in the NHL, but that's not close to enough for what we give up.

I think it can be with proper draft picks, like I said in the description. I just wasn't sure where the value was if it was a 1st plus other, only a first. That being said the best player in the trade is Karlsson, so I think a first should be going back to Ottawa, at least.

That trade has too many big deals moving back and forth. The Karlsson trade will likely not have that much going on from an NHL player standpoint. Pageau and Anderson will probably not be involved in the deal with Karlsson, so remove Sekera and Lucic. With that being said, the Sens probably don't need RNH, and he has such good chemistry with McDavid I don't think he moves either. So you give up Adam Larsson instead of RNH. That helps because the Sens will need defense. Bouchard is a good add (except that he was just drafted, and they really like the kid).

The trade would probably start with Bouchard (or a similar high-level prospect), a roster player with term and money (Adam Larsson), a young NHL-ready player (Puljujarvi maybe), and picks.

Honestly, if you look at what the Avs got for Duchene, you could see a good starting point if the trade was just Erik Karlsson. But since they "need" to trade Bobby Ryan in the deal, it will be a little bit less of a return.