The Pittsburgh Steelers traded wide receiver Antonio Brown to the Oakland Raiders last week, ending a drama-filled tenure with the franchise that bubbled over at the end of this past season.

But why didn't Brown work out in Pittsburgh?

Brown's former Steelers teammate, safety Ryan Clark, has an idea:

“I think Antonio Brown’s problem was that he felt like he was the best player on the team, he just didn’t realize he played wide receiver. Right?” Clark said on the ESPN show Get Up! on Monday morning. “Quarterback is the most important position in football and that’s Ben Roethlisberger, who has two Super Bowl championships.”

Clark then added that he doesn't think Roethlisberger was the central problem for Brown but that he does need to change some things going into next season:

“And so I don’t necessarily think that Ben is the root of the problem between those two guys, but he does have to do some things differently if this team is to win this year and all eyes will be on him and Coach [Mike] Tomlin,” said Clark.

Brown's situation with the Steelers reached a boiling point in the week leading up to the season finale, when the wideout got into a heated argument with Roethlisberger that apparently ended in Brown throwing a football at the quarterback.

The 30-year-old then refused to practice, complained of knee pain but refused to go for an MRI and then went AWOL on the team before being consequently benched by head coach Mike Tomlin for Pittsburgh's Week 17 game against the Cincinnati Bengals.