Denney undergoes second surgery
Denney may be in danger of missing a good chunk of the offseason. The 6-7/275-pounder is one of the more solid third ends in the game, but his foot issues have become chronic and threaten to limit his future effectiveness.
Source: buffalobills.com

Bills place DE Denney on IR
Denney, who sat out Buffalo's first seven games due to a fractured foot, had continued to experience swelling and pain in it for the last several weeks. The Bills had no reason to push him after falling out of playoff contention.
Source: Unknown

Denney listed as questionable for Week 9
Denney has been out all season with a broken foot. FS Jim Leonhard (calf), who started three games for the Bills but has been out since Week 4, TE Ryan Neufield and WR/Special Teamer Sam Aiken were all full participants. CB Ashton Youboty (foot) was limited in practice and will likely be listed as questionable.
Source: Rochester Democrat and Chronicle

Denney ruled out
The Bills had hoped that Denney would return after their Week 6 bye, but he still isn't healthy. Anthony Hargrove is serving as Buffalo's third end.
Source: buffalobills.com

Bills declare inactives
Denney's earliest possible return date from foot surgery is Week 7.
Source: buffalobills.com