A once promising professional football future is up in the air for Seantrel Henderson.

The former Cretin-Derham Hall stud lineman who had his pick of top-notch colleges failed to complete his University of Miami Pro Day workout for NFL teams on Thursday. ESPN's Chris Mortensen tweeted that Henderson "quit" the drills. Henderson's agent, however, said Henderson was "dehydrated and felt sick."

Henderson (who measured in at 6-7, 339 pounds) was one of 19 Hurricanes seniors at Thursday's session, attended by representatives of 30 NFL teams.

Considered a can't-miss offensive lineman recruit, Henderson originally signed to play at USC but was granted a release and instead chose Miami. He's had success with the Hurricanes, but also trouble including multiple suspensions and an inability to secure a starting job.