all of the above.
That said, and as a courtesy to OP, there is a point at which if enough is on the table, it makes sense as a biz decision to eat the $ - esp if it is only 1 yr - and take the assets.
Caps likely to prefer to keep Orpik, but if they are cap squeezed enough, they may look that way. In that case, understand they are in competition with other teams looking to dump cap --- Seabrook w/CHI, Ryan w/OTT, etc. --- and while not all these contracts are equally bad, they compete for roster space w/each other as well as NY's own bad deals.
Given that, assuming Rangers eat 100% Orp's 5.5, I would do
Rangers 2018 3rd and 2019 2nd
for
Orpik and Caps 2018 and 2019 1sts
If the Caps ate half, I do the NY 2019 2nd for the 2019 1st.
Granted, it is 1st next year, but this year's 1st is the last 1st.
Cap space is a valued asset, being finite it commands, up to a premium.
OP was polite and respectful ask.
But as
EssEmmEll sentiments, we don't want to become a dumping ground, and to make an exception to that policy, it will cost. If you get a cheaper taker elsewhere, terrif.
We are not doing a contract like Ryan, with all that term on top of top $, for a single mere 1st or so, and if we took him on at all, it would be while sending Marc Staal the other way.