I like Watson, don't think he'll be there. If he is not sure you can pass on.
As to the Bills developing QBs, in their history I can think of three, Lamonica (worst trade ever), Ferguson and Kelly (can't count the Gamblers pop gun offense), so that's three. Take any other team use the same time period and name the QBs they developed, can't count veterans that were traded for.hard to come with any team that has more than three.