I think it would be hardest to replace Orlov's minutes short term and he has the most upside long term. Skilled and physical.
My concern with Orlov is to what extent he can develop his defensive game - if he can't, he doesn't deserve more than third pair minutes with the Caps, and I don't think that role should be paid much higher than Orlov is already. If he can become a well-rounded defensemen with great offensive ability, my view is quite different.
On a team with the likes of Ovechkin, Backstrom and Kuznetsov (and offensively-capable D-men like Carlson) Orlov's offensive potential does seem like a lovely luxury that doesn't outweigh the defensive needs.
With regard to cap space, I wonder if Alzner's play this year might have changed things a little. Given that he's a good, responsible defenseman who has proven more than capable of top-pair minutes, there may be less need for Orpik in a season's time. Niskanen and Alzner will both be more experienced and, perhaps, more capable of providing stabilising 'leadership' to younger players, and Orlov (if he's still around) and Bowey may be providing the physicality Orpik offers. Unless Orpik's ability diminishes greatly over the next 12 months or so, he'll be tradeable.
Alex Prewitt; July 1 said:
The contract contains a limited no-trade clause, according to his agent Lewis Gross, meaning Orpik has the opportunity to submit a list of desired teams at the beginning of each season.
If a team like Toronto are willing to absorb Brooks Laich's contract (given that Laich is undoubtely a less-useful player than a top-2, physical, stay-at home defenseman) there's a fair chance the Caps could make a nice trade with a team Orpik would approve. So that would take care of Alzner at the very least, with room for a cheaper top-4 guy (who could end up being Schmidt or Orlov, even).
One thing to possibly think about as well: if Kuzy is truly going to cost a bomb, maybe they consider moving Backstrom? At that point Kuzy will either be at 1C level (and paid accordingly) or he won't be, and having two 1Cs while experiencing cap space issues might be too luxurious - especially with Burakovsky to pay a year later. By then Backstrom would only have two or three years left on his contract, be nearing 30, and be worth an awful lot in trade value. Alternatively, Burakovsky might be able to fill Oshie's 1RW role, Johansson or Vrana take Williams', or them be able to trade in someone younger and cheaper for one of those roles. I'm not saying I want them to do any of that - just that there might be alternatives to trading away Johansson to make room for the others, especially if Johansson ends up being cheaper than Oshie's next contract or Backstrom's current (steal of a) deal. Having a good 2C is essential to the team's success, but we may have been spoilt this season having both Kuzy and Backstrom - it might not be sustainable in the long term.