He says when FA opened. Glennon wasn't on the team when FA opened. he was signed pretty quickly though. Maybe FA's didn't believe he was the real starter even after he was signed? Also, at least early on, I think a lot of these teams and players have "handshake" deals already set up so many of the early FA's probalby already know where they are going; or at least have it narrowed down.
Biggs is pretty solid on his takes so I have a hard time not taking his word on things.
They call it the "legal tampering period"...not sure why they can't come up with a better name for that...