Per a team statement, swelling was discovered in Manuel's left knee Saturday morning. After an MRI, the aforementioned procedure - the exact nature of which wasn't specified by the team - was scheduled. The team states that Manuel will miss the Bills' remaining two preseason games, and then be re-assessed prior to the start of the regular season.
Kevin Kolb will start the team's remaining two preseason contests - next Saturday in Washington, and the following Thursday at home against Detroit.
In his first two preseason NFL games, Manuel took a commanding lead on Kolb in the race to be the Bills' opening-day starter, completing 27-of-33 passes for 199 yards with two touchdowns, no interceptions and a 111.9 quarterback rating. That lead instantly becomes meaningless if this procedure prevents him from being physically ready to play in Week 1.
We'll see what Week 1 brings (not to mention Kolb's two starts), but seriously: only in Buffalo.