Not ideal, but a better option is to transfer through Hyatt. I do not have any Hyatt points, and their site will not show me the details, but I think this is correct:
50,000 UR
50,000 Hyatt
25,000 Etihad or AA etc
Looks like it's 50K Chase -> 50K Hyatt -> 20K AA. Not sure about other Hyatt->airline options.
https://www.aa.com/i18n/aadvantage-p...s-to-miles.jsp
60K Chase -> 60K Marriott -> 25K AA would be a slightly better value (125K miles for every 300K Chase points vs. 120K miles.) Neither is a very good option though. Agree that 1.5 cents per mile on a cash booking is likely best if Etihad is a must and may actually be a pretty good deal if the OP is looking to book in economy.