What if the Boston Celtics pulled off the most shocking roster shake-up in NBA history this offseason? Basketball insider Jeff Goodman has floated a bold idea that would have fans in Beantown dreaming of green jerseys with two of the league's biggest superstars: Giannis Antetokounmpo and LeBron James.

According to Goodman, the Celtics could kick off the madness by trading Jaylen Brown—their second-best player—to the Milwaukee Bucks in exchange for the Greek Freak. "You get Giannis for Jaylen Brown, and then you go get LeBron," Goodman said on the "Bob Ryan & Jeff Goodman" show. It's a jaw-dropping pitch that would pair Antetokounmpo with Jayson Tatum, forming a dynamic frontcourt that could dominate the Eastern Conference for years.

But how realistic is it? The Bucks have reportedly shown openness to trading Giannis this offseason, and Brown might be the best asset they could get in return. That part isn't far-fetched. The real curveball is LeBron. At 40, James is set to become a free agent this summer, but he'd likely need to sign for a veteran minimum to make the cap work in Boston. While the idea of LeBron, Tatum, and Giannis sharing the court is tantalizing, it's a long shot. If LeBron leaves the Lakers, he's more likely to return to Cleveland for a farewell tour or team up with Steph Curry in Golden State for one last championship run.

Still, Goodman's vision sparks an exciting "what if" for Celtics fans. Imagine the fast breaks, the defensive versatility, and the sheer star power of three top-tier talents in green. For now, it's just a pitch—but in the NBA offseason, wild ideas have a way of becoming reality.