The Cleveland Browns have place offensive lineman Donald Stephenson on the reserve/retired list, the team announced on their official website.

Stephenson, who only signed with the Browns in March on a one-year, $2.5 million deal, had been suspended for the first two games of the upcoming season for violating the NFL’s substance abuse policy. He did not attend all the voluntary OTAs and the mandatory minicamp last month. Due to his retirement, he will not receive his $1 milllion guaranteed salary for this season.

Stephenson, 29, was drafted in the third round by the Kansas City Chiefs in the 2012 NFL Draft. In six seasons in the league (four with the Chiefs and the last two with the Denver Broncos), Stephenson appeared in 80 games (37 starts) at both right and left tackle positions, as well as guard.

He lost his starting right tackle position to Menelik Watson while playing for the Broncos last season but ended up winning it back by the tail-end of the season.

The Browns signed Stephenson as an unrestricted free agent earlier this offseason with the intention of letting him challenge for playing time at right tackle. They recently signed former No. 2 pick Greg Robinson to provide depth at the tackle position while Stephenson was away with his suspension.

But with his retirement, the likes of Chris Hubbard, Spencer Drango, and Robinson will be expected to take up the majority of the playing time at right tackle for the Browns this season. Hubbard, who signed a big five-year, $37.5 million deal this offseason, played 16 games and made 10 starts at right tackle for the Pittsburgh Steelers last season. He is expected to start at right tackle for the Browns this season.