New York Jets defensive end Muhammad Wilkerson is reportedly unhappy with the progress on a contract extension, and may skip the team's mandatory minicamp next week.

Jets general manager Mike Maccagnan said he was unaware of Wilkerson's status.

"At this point, I don't have any updates," Maccagnan said to ESPN's Rich Cimini. "I don't know."

Wilkerson is owed $6.96 million for the 2015 season and will become an unrestricted free agent at season's end. New York selected Wilkerson with its first-round pick in the 2011 NFL Draft, and he's become a versatile stalwart on one of the league's most dangerous defensive lines.

However, the Jets built a contingency plan of sorts, selecting defensive end Leonard Williams with the sixth overall pick in the 2015 NFL Draft. If Wilkerson were to leave at the end of the season, the Jets would already possess his heir apparent.