I think both Titus Young and Jahvid Best.

Looked like Young was a rising star but had a ton of behavior issues apparently stemming from concussions. He was diagnosed with being bipolar in 2013 and “Due to his personality changes, Young admitted he hears voices telling him to commit crimes, and it has been noted that he could have CTE due to multiple head traumas.” He was sentenced to 4 years in prison in 2017 but was released a year later.

Jahvid Best and his concussions man. Dude was electric!

I’ve heard him call sorority girls as frat mattresses

I think about this whenever I think of early picks of the Lions. Like wtf happened to them? What is Nick Fairley, Titus Young, Mikel Leshoure, Ryan Broyles, Ziggy Ansah, Eric Ebron, Jarrad Davis, Teez Tabor, Jahlani Tavai, pretty soon Jeff Okudah, Louis Delmas, Gosder Cherilus, Kevin Smith, Cliff Avril, Ernie sims, Roy Williams, Kevin Jones, Aaron Gibson doing now?

Shit the list just goes on forever