Legit Shot At Making NBA Team

Now entering the game for the (insert NBA team name here) ... J. Cole?!?

NBA player Larry Sanders says HELL YEAH ... telling TMZ Sports he truly believes the rapper has a real chance at making his pro ball dreams come true.

Of course, the idea took off when 35-year-old Cole -- who grew up loving and playing basketball -- starred in a Puma commercial hinting at trying to get a shot at the Association.

Master P told us Cole is dead serious about making it happen ... and even the Detroit Pistons told the "Lion King On Ice" MC to hit 'em up for a tryout.

We spoke with Sanders -- who's played in 6 NBA seasons -- and asked if Cole's got a realistic chance ... and his answer may surprise you.

"I do,…