Johnny Manziel -- BACK TO THE BENCH ... Won't Start This Week

Apparently, LeBron and Drake didn't campaign hard enough ... because Johnny Manziel will NOT start for the Cleveland Browns this weekend ... so says Jay Glazer.

The "NFL on Fox" star says, "The Manziel Era is NOT beginning in Cleveland yet as Brian Hoyer has been informed he will start this weekend vs Indy."

LeBron had told the media his friend Manziel was "ready" to take over if called upon. And after his eyebrow-raising performance last week, it seemed Johnny time was gonna get the nod -- including Drake who flashed the money sign to support his BFF.

Guess he'll just have to wait.

Glazer adds, "Hoyer had widespread support inside the locker room. No brainer according to players in there."