Druski is starting his own sports agency, but his first client is no joke -- the superstar comedian is signing Florida Gators star and NFL Draft prospect Princely Umanmielen!!
TMZ Sports is told Druski -- who boasts millions of followers on social media -- is launching the athletics branch of his 4Lifers brand ... with the defensive standout coming on board as his inaugural signee.
Umanmielen is widely regarded as one of the top defensive ends in the country ... and has been named to the Chuck Bednarik and Lombardi Award watch lists this season after racking up 39 total tackles, 4.