Wilson reported that the Texans worked out Coughman on Tuesday with OT Jesse Davis also being a participant.
Coughman, 27, originally signed with the Seahawks as an undrafted free agent out of Shaw University. He also played for the Cowboys briefly before he signed a reserve/future contract with the Bills. Since then, he signed on with the Buccaneers before getting waived during roster cuts on September 8.
While Coughman has bounced around to a number of teams, he has yet to appear in a NFL game.