Read more: http://www.cbssports.com/nfl/draft/...inston-peters-among-those-in-red-flag-rundownEvery year scouts have to play the role of private investigators to determine which prospects made a mistake or two and have since matured and which are likely to continue to make poor decisions off the field. This year's class has its share of talented but troubled prospects. Here are a few of the prospects invited to the 2015 NFL combine that scouts will want to investigate. Players are listed alphabetically
Frank Clark, DE, Michigan
The Concern: Was arrested in November on a misdemeanor domestic violence and assault charges and was dismissed from the team. This comes approximately two years after Clark was arrested and initially charged with felony theft for stealing a laptop.
The Bottom Line: The 6-foot-2, 270-pounder racked up 120 tackles, 35 tackles for loss and 11 sacks in 48 games for Michigan. Clark is physical and intense and could make a 4-3 team as a rotational defensive end.
Dorial Green-Beckham, WR, Oklahoma
The Concern: Was twice charged with marijuana-related crimes while at Missouri and was dismissed from the program after an investigation for burglary and assault. Signed on with Oklahoma in 2014 under the presumption that he'd play for the Sooners after sitting out the mandatory one year per NCAA rules but elected to enter the NFL draft.
The Bottom Line: Rated by some as the elite prep talent in the country when he signed with Missouri, DGB possesses a top 10 talent, evoking comparisons to Cincinnati Bengals star A.J. Green for his grace, speed and catch radius. Some team will gamble on him earlier than his rap sheet suggests is prudent, perhaps as early as the first round.
A.J. Johnson, ILB, Tennessee:
The Concern: Johnson was indicted on two counts of rape by a grand jury on Thursday. He was dismissed from the team in November when he and former teammate Michael Williams were first accused of the crimes. Previously Johnson was arrested for purchasing alcohol for a minor and resisting arrest.
The Bottom Line: Johnson has been an ultra-productive player for Tennessee (425 career tackles) but he lacks top speed to the perimeter and struggles to disengage from blocks. He'd be a fringe draft pick without the off-field concerns.
Did not know that about A.J. Johnson...I didn't like him before but now he's completely radioactive.