Reagor, who had been on the practice squad, is signing to the active roster, according to Ian Rapoport of NFL Network.
The 24-year-old Reagor has already played in two games for the Patriots this season as a practice-squad call-up. In Sunday's win over the Bills he picked up a first down with an 11-yard catch.
A first-round pick of the Eagles in 2020, Reagor was a major disappointment in Philadelphia and was traded to the Vikings for a seventh-round draft pick. He lasted a year in Minnesota before he was released after the preseason this year, and he's been on the Patriots' practice squad since.