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If Larry Johnson were in Cooper Flagg's giant Blue Devil sneakers, he tells TMZ Sports he'd forgo the NBA for one more year ... and stay put in Durham.
Flagg, of course, is the prohibitive favorite to go at the top of this year's draft ... but Johnson made it clear to us he'd like to see the 18-year-old hang around Duke a bit longer.
Launch Gallery Launch Gallery GettyThe College Basketball Hall of Famer said the extra year of ACC ball would help Flagg tremendously in the long run .