On September 2, 2017, the Seahawks traded Marsh to the New England Patriots in exchange for the Patriots' fifth- and seventh-round selections in the 2018 NFL Draft. Week 1 on September 7 against Kansas City his blown coverage resulted in a 78-yard Kareem Hunt touchdown reception. On October 22, he blocked a field goal in a game versus the Atlanta Falcons. On November 21 the Patriots waived Marsh. Marsh has since expressed criticism of Belichick's coaching methods. A report in 2018 said that Marsh had a locker room “tirade” and temper tantrum over playing time at halftime when the Patriots were leading 17–0 in Mexico City versus the Raiders. He was released two days later.
