It's possible Merriman contributes just as much as Marcus Jones and Jason Gildon did for the Bills once upon a time--- remember those names? But it's definitely worth a shot.
One thing that is odd about all of this is Chan Gailey's response in the afternoon pres conference. According to Joe Buscaglia, Gailey didn't recall coaching against Merriman when he was at Georgia Tech and Merriman was at Maryland. Gailey thought he was already gone by the time he took over at GT, although their respective tenures overlapped from 2002-05, and Merriman was pretty effective against the Yellow Jackets. He very well could have been intentionally coy because he didn't want to let on the Bills were discussing it internally, but it's odd nonetheless.
http://www.wgr550.com/BUSCAGLIA--How-Does-Merriman-Fit-Bills-/8498682