"It's a really horrible situation to feel like this, and to walk into the locker room and tell those guys you're not going to be with them for four games – it breaks my heart," Lewan said last month. "It's tough, man. But I've been very candid with Jon (Robinson) and (Mike) Vrabel and Amy (Adams Strunk) and told them right away.

"I don't want the legacy, or whatever I have done in the last five years, to be tarnished because of this, because of something like this, that was a complete accident that I'm going to try and make up for."

Lewan posted a video last month and said he received a letter from the NFL a few weeks ago saying he'd failed a drug test for ostarine.

At a press conference at the start of training camp, Lewan said he's innocent, but the three-time Pro Bowler knew he'd likely miss the first four games of the season. Lewan said he "didn't take anything knowingly" to "cheat the game."

The Titans open the 2019 season on September 8 at Cleveland before games against the Colts, Jaguars and Falcons.

Lewan will be eligible to play for the first time this season on October 6 vs. Buffalo.

"It's going to kill me," Lewan said. "It's going to be a horrible situation to sit there on Sundays and have to watch on a TV. To come to a facility that I've been coming to for five, knowing that I am not allowed to come in. It's going to break my heart. It breaks my heart now just talking about it.