Mark Cuban never shies away from speaking his mind.

The Mavericks owner on Wednesday joined KTCK-AM 1310 radio to discuss basketball and politics, specifically Donald Trump. When prompted about his chances, Cuban said he believes the controversial GOP presidential candidate can in fact become the Republican nominee.

"It's still too early to tell because so much can happen over the next however many months," Cuban said. "I don't even know when the convention is, August or July or whatever. So it's too early to tell. Is there a chance? Yes. Is it better than a 50-50 chance? Yes."

MORE: Which athlete does each presidential candidate remind us of?

The billionaire investor and "Shark Tank" star admitted he's

considered running for president himself, though the idea has been shut down by "the boss of the household," his wife. But when asked if he would consider taking on the role of Trump's vice president, Cuban said he would agree on one condition.

"As long as he said he'[d] listen to me in everything I said we'd be okay," Cuban said. "Over the years we've been back and forth. We've talked on the phone and we always respect each other. He knows that I can pick on him and I'm not going to back down. And I know he'd pick on me and it won't have any effect on me at all. It's all fun. ... He's very competitive, like I am. He doesn't mind banging heads."

Trump came under fire Thursday for his comments about constructing a wall between the United States and Mexico and sparked the attention of Pope Francis, who said the GOP front-runner "is not Christian" if he calls for the deportation of immigrants and pledges to build a barrier to keep people out. Cuban, on the other hand, thinks Trump is onto something.

MORE: Presidential betting odds update

"You know what? That is the best idea yet," Cuban said. "That'll keep people in Mexico for sure."