There’s a new development related to Pittsburgh Steelers tight end Ladarius Green and it’s concerning the headaches that have reportedly prevented him practicing with the team.

According to Gerry Dulac of the Pittsburgh Post-Gazette, Green apparently never told the Steelers about the headaches he had been experiencing when they signed him to a four-year, $20 million contract this past March. He is reportedly in concussion protocol currently, a source told Dulac.

This is quite an interesting development and could ultimately result in the Steelers filing some sort of grievance against Green in the future should the headaches prevent him from playing.

Earlier on Thursday, Aditi Kinkhabwala of the NFL Network reported that recurring headaches are currently keeping Green off the practice field and on Active PUP and not his surgically repaired ankle. Green’s agent, Adisi Bakara, reportedly said Wednesday night that his clients ankle is “fine.”

If the report by Dulac turns out to be true and Green’s headaches continue to keep him off the field, the Steelers could potential go after the $4.75 million signing bonus they gave the tight end when they signed him early in free agency should they ultimately decide to release him.

According to Dulac, this isn’t a good sign when it comes to Green, who hasn’t been hit in 8 months. When the tight end signed with the Steelers he said problems with his sinuses were his main issue and that he didn’t suffer a third concussion in last year’s Week 2 game against the Cincinatti Bengals. At the time, it was reported that Green had suffered three concussions in the span of 10 months time.

Green’s first concussion during that span of 10 months reportedly took place late in the 2014 season during the San Diego Chargers against the New England Patriots.

The Steelers will play their first preseason game of 2016 Friday night at Heinz Field against the Detroit Lions and you can count on head coach Mike Tomlin being asked about Green and his reported headaches during his post game press conference.

Source: Green never told Steelers about headaches when they signed him in FA. — Gerry Dulac (@gerrydulac) August 12, 2016