Kanye West, the controversial rapper who continues to make headlines almost on a daily basis, is now engaged in a Twitter beef with Shaquille O’Neal. West launched his latest rant when he took to Twitter to diss O’Neal’s business deals.

The Grammy-winning artist specifically attacked O’Neal’s partnership with Canadian billionaire Jamie Salter, who owns a brand development, marketing and entertainment company known as ABG. The company, according to Basketball Network, owns a portfolio of global media, entertainment and lifestyle brands.