The Patriots have filled two of their open roster spots.
This is Johnson’s second stint with New England. The club first signed him on May 19, then waived him on June 9. The 23-year-old Johnson hauled in 60 passes for 608 yards and two touchdowns in his senior season with the Black Bears.
McDonald, 22, caught 51-958-7 as a senior in 2013. According to South Carolina State, he had previously been invited to try out for New England.
The Patriots now have one open roster spot.