After thinking about the possible rationales for the trade, I kept coming back to the theory that McD and Beane may be leaning towards Tyrod as the franchise QB, especially as the season rolls on.
So why the counter intuitive move to trade your best WR to help out your QB - which is opposite of Whaley's thinking in 2014?
I think that TT and Sammy never truly meshed as a combo, and one of them had to go. Here's the third off-season between the two, and the word "chemistry" has been the one constant in the reporting of the two and not always in the positive sense.
There's never any question who the go to guy is for all QBs, but that never was the case for Tyrod & Sammy. The Bills offense fared much worse in 2015 when Percy went down than when Sammy went down. There wasn't that much drop off in the offense with Sammy in the game vs him being out.
The same chemistry question popped up in 2016 and it was the first theme that reporters latched on this training camp. That's unheard of between a QB and his top WR going into year three.
Finally, Tyrod's lukewarm parting shots yesterday hint that he won't be as disappointed with Sammy's exit as the fans are.
This is not to say that Sammy is not an elite player who won't light it up in LA. I'm just thinking that Bills offense may actually benefit because Tyrod may be working with a WR crew with whom he has better chemistry.