The 2015 NFL Draft kicks off Thursday with a first round slate that is sure to garner outsized attention and second-guessing. Hitting right on a highly-touted prospect can transform a franchise’s fortunes overnight. However, on the flip side, falling for a draft bust can set you back multiple seasons.

Just ask the Cleveland Browns. They went all in on Johnny Manziel being their quarterback for the future. Then, he had a disaterous rookie campaign marred by poor play and poor off-field decisions, that already have the Browns wondering if they need to cut bait with him immediately.

Who might join Johnny Football as a bad boy bust for 2015? Here are five contenders.

1. Jameis Winston, Florida State
Talented enough to go first to the Tampa Bay Buccaneers, but Winston comes with enough red flags to furnish a flag football league. He’s been accused of sexual assault, arrested for shoplifting from a grocery store, suspended for yelling misogynist obscenities in public. And his TD-to-interception ratio is worrisome. If he can mature, he has the potential to be a ten-time Pro Bowler. But that’s a big if.

2. Marcus Peters
Peters is the most NFL-ready defensive back in the draft, but like Winston he also carries character concerns. While Winston’s are mostly of immaturity or stupidity, Peters’ problems deal with discipline and anger management. He was kicked off the Washington Huskies roster in 2014 for clashing repeatedly with coaches.

3. Randy Gregory
Gregory was arguably the best defensive end and pass rusher in the NCAA last season, but he tested positive for weed during the combine. He’s also very undersized for an end-rusher on the NFL level—will he be able to create separation from offensive lineman on the next level?

4. Devin Funchess
Some are saying this Michigan Wolverines receiver will be the third wide-out to go, after Amari Cooper and Kevin White. However, Funchess’ lack of blocking ability raises some concerns.

5. Karlos Williams
Scouts say this Florida State running back has a high ceiling and would be a fit for multiple NFL offensive schemes, but he comes with nearly as many character concerns as his Seminoles teammate, Winston. Williams was investigated for domestic battery in college, though the charges were later dropped.