Rookie Will Campbell has been working with the Patriots' starting offensive line this spring.
Rookie Will Campbell has been working with the Patriots' starting offensive line this spring.John Tlumacki/Globe Staff
Patriots first-round pick Will Campbell has signed his rookie deal, according to a league source.
Campbell, chosen fourth overall in the NFL Draft, agreed to a four-year, $43.66 million contract with a $28.39 million signing bonus.
The 21-year-old, a left tackle at Louisiana State, has been working with the Patriots’ starting offensive line during the spring. The 6-foot-6-inch, 319-pounder was a first-team All-American last year, and a finalist for the Lombardi Award, given annually to the nation’s top lineman.
Second-round pick TreVeyon Henderson and fourth-round choice Craig Woodson are New England’s only remaining unsigned rookies.
Christopher Price can be reached at christopher.price@globe.com. Follow him @cpriceglobe.