The contract dispute between the Cincinnati Bengals and star defensive end Trey Hendrickson doesn't appear to be ending anytime soon, and one insider provided some insight on what's causing the holdup.

Cincinnati Bengals defensive end Trey Hendrickson made a surprise appearance at practice on Tuesday, just one day after issuing a scathing message through the media about his contract standoff with the team. Wearing casual attire on the sidelines, Hendrickson gave an interview in which he said things have become "personal" between him and the team.

A text from head coach Zac Taylor led Bengals All-Pro defensive end Trey Hendrickson to head to Cincinnati, attend Tuesday’s optional team practice as a spectator and speak to reporters.