Details on Clancy injury?

Does anyone know exactly what is going on with him? He's one of our better defensive linemen, and it doesn't seem like anybody's really paying all that much attention to him being out the past 2 weeks. Also, did anyone focus on ayodele last week? How was he? Philly had to pass quite a bit after we took such a big lead, but I have a feeling Buffalo is going to try to take advantage of our best run stuffing DL being out this week.