It's already been devalued substantially. I suspect it will actually get stronger. That aside, the options are probably not expensive, you may not be accounting for the interest rate differential which is substantial.
Accreditation of the Yuan as a reserve currency. Is this why you expect strength in the Yuan?
http://www.bloomberg.com/news/artic...y-pass-the-imf-currency-test-you-ll-know-soon
oops: I actually worked in that pit for 3 years a two decades ago.)There doesn't seem to be any listing of these options on the CME or Quickstrike. If you are with IBKR, they might have an international futures market that's liquid. Aside from that, you may be able to get a custom product with a forex broker. But your stacking major costs.