Orchard, N.Y. ? Buffalo Bills reserve tight end Kevin Everett had surgery Sunday after injuring his spine on a kickoff against the Denver Broncos, and there is concern about whether he will walk again.

“He’s had some sparse movement,” Everett’s agent, Brian Overstreet, told the Associated Press in a phone interview late Sunday.

“The next couple of days is going to be critical,” Overstreet said.