On the other hand, Johnson's agent, Ken Sarnoff, has denied any "rumors" that the suspension is coming, and declined to comment on his client's health situation. The Eagles have yet to comment at all.
This comes just six months after Philadelphia gave Johnson a five-year contract extension, worth $52.25 million. That extension was worked out with the intentions of moving him to the left tackle position.
The former Oklahoma Sooner does have history with banned substances, as he was suspended four games in 2014 for taking a prescribed medication that was on the league's banned list.
Outside of the time missed due to that suspension, the 26-year-old has been very valuable to the Eagles' offensive line. He has played in all 45 games that he was eligible since being selected No. 3 overall in the 2013 draft. If he does face a suspension, he will not return until the November 28th game against the Green Bay Packers. The likes of Andrew Gardner, Matt Tobin, and Dennis Kelly have been listed as potential replacements.