LeBron James just hooked his childhood friend up in a HUGE way ... pulling some strings to help get one of his boys' rap songs on the new NBA 2K14 soundtrack ... TMZ Sports has learned.
We spoke to Sian Cotton -- who's been close with 'Bron since they were kids. In fact, Sian says they've been having rap sessions together since they were 9.
Sian says LeBron hasn't just been supportive of his aspiring rap career -- but when LBJ learned he'd be on the cover of 2K14, he did everything he could to help get Sian's track "Almost Home" on the game.