There's new sense of competition in Dallas as well. The Cowboys traded for New England Patriots backup Joe Milton, who was universally praised by Patriots coaches for his level of preparation as a rookie last season. Milton is already pushing Prescott in Cowboys camp, which is something that the veteran appreciates.

In April, the Dallas Cowboys acquired Joe Milton and a seventh-round pick from the New England Patriots in exchange for a fifth-round pick. Milton is the No. 2 QB on the depth chart behind Dak Prescott, who enters year one of a $240 million extension.

Dallas Cowboys quarterback Joe Milton sideswiped the New England Patriots' locker room after spending his rookie season there as a backup.

QB Joe Milton III was caught off guard when he was traded from the Patriots to the Cowboys in May. But in the two months he has been in Dallas, he has started to feel at home, and part of the reason is because of the team’s starting quarterback.