Read fully the article guys.
Giannis was mentioned because of the flow of the discussion. Their topic isn't about Giannis but the status of Dallas Mavericks this season. The "White Mamba" just says that "in case" the Greek Freak considers leaving the Bucks, he should go to Dallas and not with the other team. He also explained in the article why and it does make sense for me honestly.
Let's not be serious about that statement. He just shared his own view. He is an analyst in the first place. We all know that Giannis doesn't have any plan, at least for now, leaving the Bucks organization.
I think that situation is not that simple, it will depend on how Milwaukee performs this season. This is what he said few months ago
"I want the Bucks to build a winning culture," Elberse and her co-author, master's student Melcolm Ruffin, quoted Antetokounmpo as saying. "So far, we have been doing great, and, if this lasts, there's no other place I want to be. But if we're underperforming in the NBA next year, deciding whether to sign becomes a lot more difficult."
So despite Bucks being able to offer him $253 million extension next year, he is not 100% certain that he stays there.
So far Bucks are doing great, they have the best score in the league, but IMHO everything below conference final will be underperformance.