Houston Texans left tackle Duane Brown was not at the first two days of voluntary OTAs, an absence that is thought to be contract related.
Brown has two years left on a six-year contract, but there is no more guaranteed money remaining on the deal. He is scheduled to make a base salary of $9.65 million in 2017 and $9.75 million the following season.
Because the OTAs are voluntary, he cannot be fined for not showing up. He would be subject to fines if he does not report to veteran minicamp in three weeks.
Brown, who was named a Pro Bowl alternate last season, is entering his 10th NFL season. He anchors a Texans offensive line that currently does not have a starting right tackle after the team put Derek Newton on injured reserve.
General manager Rick Smith has also said he wants to sign star wide receiver DeAndre Hopkins, who is entering the final year of his rookie contract, to an extension during the offseason.
Brown, who was drafted in 2008 by the Texans out of Virginia Tech, has been a mainstay on the team on the left side of the O-Line up until the last few seasons, when injuries have slowed him down somewhat.