this is the oilers team

The team doesn't have to be Dallas but with Barrie not fitting into the team anymore, the oilers should be looking to move him. His offensive analytics over a 3 year period have been pretty decent (similar to Klingberg, check naturalstattrick). But, as we've seen from recent trades, dmen with a higher cap hit who teams are looking to move out won't bring in much as we've seen from the last two Schmidt trades. However, Barrie is still a solid nhl player who can quarterback a PP1. A guy Dallas will need with the departure of Klingberg in the offseason.

Don't know why Philly would trade one of their best dmen but given the recent signing of Risto, they'd do this.

Since the Isles are going with Pulock and Dobson on the right side for their top 4, Mayfield would be stuck playing bottom pairing minutes. Their best interest would to be shopping him around as he only has a year left in his contract after this season. Getting solid picks and a prospect back would be ideal as their prospect pool runs thin and essentially they're giving up their 3rd pairing guy (easily replaceable) for future pieces.