That's the problem. Philly tied up 59 million (or something like that amount) in Bradford and Chase, why would they then trade their 2016 and 2017 draft picks for another quarterback? They can't have three main quarterbacks on the roster (and can they even afford to sign him now).As for Bradford, Eagles had/have put a high price tag on him so a trade isn't going to be likely or won't happen anytime soon.
I think Chase Daniels is their best option for 2016. Bench Wentz and let him learn about being a NFL QB, start Daniels and unload injury prone (and over paid) Bradford
Edit:
Man, why am I not a GM in the NFL - I seem to know what to do