Exclusive Details

Bad news for the Bruins ... Snoop Dogg's football star son has left the the UCLA football team again ... school officials confirm to TMZ Sports.

Cordell Broadus was not with the rest of the team at the first day of training camp Monday morning -- raising some red flags. Plus, L.A. Daily News reporter Thuc Nhi Nguyen says he wasn't on the official roster.

Now, UCLA associate director of communications Steve Rourke confirms ... he's NOT on the team.

Broadus was one of the top high school WRs in the country -- and accepted a scholarship to play for the Bruins last year. But he quit the team to pursue other interests before the 2015 season.

He rejoined back in March saying he "missed the game" -- and wanted to earn his spot back as a walk-on.

But sources connected to Broadus tell us ... his head wasn't completely in it and he recently decided to leave the program ... again.