Quoting: AH96
Calgary has to add a huge amount. Couturier and Konecny are the two best players in the trade
Gaudreau is still better than Konecny. Ask me again in 2 years though and I may agree with you.
RE: What needs to get added
CGY needs to add to this deal for at least three reasons:
1) Konecny has the most term in the deal
2) Konecny is the youngest player in the deal
3) Couturier has the cheapest contract in the deal, but is the better C by a decent margin
Based on the above, I think CGY would have to add a 2020 1st (#19) + Pelletier (#26 in 2019 draft) to get close to a deal. Even then, I could see PHI saying, "this deal doesn't work for us right now".
Conclusion: Even with CGY paying the premium above the 2-for-2 player swap, I don't think PHI would do this deal this summer because it would be a massive shakeup to their locker room, which is working pretty well lately.