'Big Baby' Davis: I Believe Kenny Smith ... Kobe Won't Really Retire

Another NBA guy says the Kobe Bryant farewell tour won't last -- with Glen "Big Baby" Davis telling TMZ Sports he believes Kenny Smith ... who says Kobe will probably be back in the league next year.

Smith previously told us Kobe will likely pull a Jordan and try to come back when his body heals up -- because he'll simply miss the game too much.

And Wednesday night, Davis told us he's on board with the conspiracy theory ... "I believe Kenny most definitely."

We'll see ...