Brandon Marshall: Johnny Manziel 'ruining a very special opportunity'

Golic: Manziel's partying just proves he doesn't get it (2:19)

ESPN's Mike Greenberg and Mike Golic react to the buzz that Browns QB Johnny Manziel spent his weekend partying in Las Vegas sporting a disguise. (2:19)

New York Jets wide receiver Brandon Marshall, whose NFL career was nearly derailed years ago by personal problems, chided Cleveland Browns quarterback Johnny Manziel and advised him to seek help for his issues.

"Johnny, Johnny, Johnny," Marshall said during a segment that aired Tuesday night on Showtime's "Inside the NFL."

"This is a serious topic. Well, first, you've got to forget about football, sir. You need to go get your life together. And to be quite frank, I don't think you get it. You don't understand. You're ruining a very, very special opportunity. It's an honor to be in the NFL."

Marshall continued, "There is a thing out there called divine mentorship, where you can learn from others' mistakes. He has the opportunity to really sit back and reflect on his situation, look at others, and learn from it and be better."

Marshall has been a regular on the show for the last two years.

Manziel's problems have been well-documented. Most recently, he failed to show up for mandatory treatment Sunday morning as part of the NFL's concussion protocol. On Tuesday, his marketing deal with LeBron James' agency came to an end.

Manziel, the 2012 Heisman Trophy winner and No. 22 draft pick in 2014, spent 10 weeks in a rehab facility last offseason for an undisclosed issue.

Marshall endured his share of problems early in his career, including multiple domestic-violence arrests. He was diagnosed with borderline personality disorder and has become a spokesman for mental-health awareness.