Prescott is leaving Jeff Guerriero of ProSource Sports and has hired Todd France and Creative Artists Agency, the Fort Worth Star-Telegram reported.
Prescott must wait five days after notifying his former agent before registering the move with the NFL Players' Association. That is when the change becomes official.
Prescott, a fourth-round pick in the 2016 NFL Draft, signed a four-year, $2.7 million deal after the Cowboys selected him. He will make $630,000 in base salary this season, and he makes more in endorsements than he does playing football.
Prescott, 24, has a 22-10 record as a starter in two seasons with Dallas. He has thrown for 6,991 yards, 45 touchdowns and 17 interceptions.
He had a 9-7 record as a starter in 2017, when he completed 62.9 percent of his throws with 22 touchdown passes and 13 interceptions.