Sounds like Oduya should play a few games pre-deadline to give buyers a sense of where he's at. I'm not sure I love the fit with him presumably playing with Orpik if Schmidt can't hack it but you'd still have to figure if they were to add anyone they'll err on the side of being defensively responsible. He could also be a potential Alzner stopgap replacement next year if he has enough left in the tank.
Further narrowing sights in light of cap/cost value:
1,000,000 W Patrick Eaves
1,250,000 RW PA Parenteau
1,250,000 D Kyle Quincey
1,200,000 C Jay McClement
0,712,500 F PE Bellemare
1,500,000 LW Viktor Stalberg
2,000,000 W Jiri Hudler
0,800,000 D Greg Pateryn
2,000,000 C Brian Boyle
1,600,000 LW Teddy Purcell
0,800,000 LW Steve Ott
0,887,500 D Paul Postma
0,800,000 D Patrick Wiercioch
0,950,000 LW Tomas Jurco (RFA)
0,600,000 RW Adam Cracknell
1,000,000 LW Lauri Korpikoski
2,000,000 D Fedor Tyutin
1,025,000 LW Andrew Miller
1,300,000 C Mikhail Grigorenko (RFA)
1,800,000 C John Mitchell
2,250,000 D Nick Schultz
------------------------
2,750,000 D Brendan Smith
3,325,000 RD Cody Franson
3,750,000 D Johnny Oduya
The last three will require some salary retention and there are other more skilled forwards that would perhaps fit with some retention (less likely, though, IMO). Vanek's AAV is almost cheap enough at $2.6M but I doubt the Caps are players for him. To me this is the realistic market for them...along with whatever third string goalie is targeted (Zatkoff makes sense).
Maybe Sanford and Vrana are enough forward depth but I'm not sure they're factoring in just how tough the playoffs are. These will be the most challenging games they play so they need to plan accordingly and project forward with that reality firmly in mind.