Story highlights Billionaire Cuban cited Trump's "lack of depth of knowledge"

It's not the first time Cuban has sought to take Trump down a peg

New York (CNN) Mark Cuban is questioning Donald Trump's ability to function independently if elected, saying the presumptive Republican nominee would be a "puppet president" hamstrung by a lack of experience and intellectual rigor.

"He would be so dependent on everyone around him because of his lack of depth of knowledge and fear of failing," Cuban told BuzzFeed News in an email interview.

"And he isn't good at hiring either," the billionaire owner of the NBA's Dallas Mavericks continued. "That's why he puts family (and he gets credit for having such smart, accomplished kids) in so many important positions."

Cuban said he likes his "thin-skinned" fellow billionaire businessman but said Trump "has absolutely zero self-awareness. None. Zip."

It's not the first time Cuban has sought to take Trump down a peg.

Read More