NFL spokesman Greg Aiello told NFL.com and NFL Network on Sunday that Blackmon is subject to the league's drug and personal-conduct policies even though he hasn't yet signed a contract.
Though this is Blackmon's second DUI arrest in three years, the league likely will view him as a first-time offender of its policies. Under those circumstances, a suspension is unlikely, though -- as Vito Stellino of The Florida Union-Times notes -- Blackmon could be placed in the league's intervention program and receive an evaluation, possible treatment plan and random testing.
We did some digging and couldn't find an NFL player in the past five years who approached Blackmon's .24 on a DUI arrest. The severity of the situation might not change how discipline is handled, but it's an eye-opener nonetheless.