data-mm-id=”_4kef4fhx4″>The Boston Celtics currently trail the Philadelphia 76ers 3-2 in the Eastern Conference semifinals and haven't looked great in the series. Elimination short of the NBA Finals would qualify as a disappointment after Boston lost the title series last season. Colin Cowherd thinks it's time for the Celtics to shake up the roster and trade Jaylen Brown. Bill Simmons absolutely hates the proposed deal.On Wednesday's episode of The Herd, Cowherd claimed the Celtics needed to make major changes and get rid of Brown to do so. His idea was to trade the two-time All-Star to the Golden State Warriors in exchange for Andrew Wiggins and Jordan Poole. That would give star Jayson Tatum some help defensively on the wing with Wiggins, and scoring punch with Poole. …