NFL sources said Denver wide receiver Brandon Marshall will be suspended this week for three games for violating the league's Personal Conduct Policy, NFL Network's Adam Schefter reports.
The suspension could be dropped to two games if Marshall agrees to undergo counseling during his suspension.
Marshall is due in court in September for a trial on a drunken driving arrest from October 2007. He as been arrested three times in the past year.
Broncos head coach Mike Shanahan refused to speculate about Marshall's suspension, which has yet to be announced.
"If I made comments every time I heard a rumor, I'll be talking to you every day and have to answer every question you [the media] ask," Shanahan said Monday when he met with the media. "Let's deal with reality. We'll let you guys know when we know something."
The third-year pro emerged as the Broncos' top receiver last season after the loss of veterans Javon Walker and Rod Smith to injuries, developing a strong rapoire with quarterback Jay Cutler. Marshall set career-highs and led the Broncos in receptions (102), receiving yards (1,325) and touchdowns (seven).
Marshall can practice with the team during the preseason but will miss the start of the regular season.
Veteran cornerback Dre Bly doesn't feel the ongoing situation is changing Marshall's performance in practice.
"If it is weighing on him, it doesn't show," Bly said. "Any time you get a chance to be taken away from something you do, it is obviously going to hurt you. He is doing a good job not letting it bother him. He is out here everyday working us, trying to get better, becoming Jay's go-to guy.
"All kids make mistakes, I make mistakes, everybody makes mistakes. I don't think he should be judged on the rumors he had in the past. I think he has only been convicted in one of his charges. He is a good kid, just an unfortunate man. Hopefully it won't be so bad. I'm hoping Brandon will be with us the first couple of games because he is a big part of what we do."