Honestly:
We need to move one of Smid or Engelland. While Engel's been playing pretty decently lately; he's not going to ever live up to that contract. Smid is overpaid for his role with this team; and while I love the warriors.. one or the other has to go.
While Diaz has been playing absolutely great as of late as well; I don't think there will be many people lining up for his services after this season. It could be another guy Calgary signs on to be our #7 for a league minimum again a few days after FAF.
My prime targets would be in order:
Petry
Sekera
Franson
Green would be worth a look; but he is going to get PAID this off-season (same as Franson; Green however, is already being paid North of 6 Million, which I'm sure he'd want again) I think he'd probably look something similar to Niskanen did this offseason, or bigger money on a short term (talking North of 6.5 here).
Calgary's worked really hard at minimizing bad contracts; the last thing we want to do is spend up to the cap with marginal talent when our best players are currently cap-controlled (JG, Monny, Gio) and who won't be for long.
Petry is probably your best best. I think you could probably get him for south of 5 million on a 5 year contract (think along the lines of 23-25/5); he's a big top 4 Dman... He gets a bad wrap because of the Oil... but I'd love to have this big guy on our backend... especially when we play the Oil and he gets to show them what they left on the table.
Sekera is your next best bet. He plays in a hockey dead-zone, so most people don't even know about this guy. He's a top 4 (arguably a #2, very arguably) that is great skating (Calgary, yay) PMD. I think he'd probably be around that 5/year type figure as well.
A top 4 consisting of any of the following:
Gio, Brodie, Russell, Sekera or Petry would be one of the better ones in the league. It would also push Wideman down into more of a PP, offensive start role. He's been a good full ice player this year; but I'm certain he'd even love to get easy zone starts and 1st PP unit time, while playing 15-16 minutes a night. It'd let Wotherspoon move up as well. I'm fairly certain that if Wother got preseason time, he could have possibly made this team out of camp. I think he'll be a full-time NHLer by next season.