Former USF quarterback Quinton Flowers, who carved an historic collegiate career out of disproving skeptics, will try to do the same in the NFL.Courtesy of the Bengals.Flowers' agent, Zac Hiller, confirmed Saturday evening the Bulls' dual-threat sensation — bypassed in the NFL draft — has agreed to a free-agent deal with Cincinnati.He joins no fewer than three other teammates along the undrafted free agent route: CB Deatrick Nichols (Cardinals), DE Mike Love (Bills) and DT Bruce Hector (Eagles).CONGRATULATIONS Mike Love on joining the @buffalobills !! #NFLDraft #FootballFamOTG pic.twitter.com/yTlA53aJXd— OTG Sports (@OTGSports) April 28, 2018Widely considered the greatest player in USF history, Flowers broke more than 30 school records in a glorious career, finishing with a 30-9 record as a starter and setting the American Athletic Conference's career total yardage record (11,802 yards).But draft analysts frowned on his height (5-foot-11 1/2 inches) and accuracy, in much the same way many college coaches questioned his ability to play quarterback at the Division I-A level when he was recruited out of Miami's Jackson High.Related: Quinton Flowers stands tall (or taller) at USF pro day"There's too many missed routine throws, I think would be the biggest issue," ESPN draft analyst Todd McShay said earlier this month."His height is a concern, as (has been) overcome by some, but you have to be really refined as a passer, and really your timing and ability to move within the pocket and locate passing windows if you're 5-10. You've got to be Russell Wilson, and Russell Wilson is kind of one in a million, really."