Thank you for your advice and help, i do really appreciate it. After reading it i felt better about doing it. The Browns ended up rejected all the trades i offer. I finally got them to pull the trigger and did this. My offer was Wright, and this years third and next years third for Manzel and a 7th rounder. They wanted NOTHing to do with Mettenberger. For fun i even offered them him and two first rounders (NO way in hell would i proceeded, but) and they declined. But, they accepted this one? odd logic.
I think the key for a guy like that is you have to try to do it in the preseason, or during the year if he is struggling. I feel once you get past the first year and they upgrade him and his overall goes up, your chances of grabbing him go down. I had issues also, but they did it for me week two.
Thank you for your advice, again i feel good about my chise and proceeding happily!