Date of birth
Another graduate from the club's academy, midfielder Brownell signed his first professional contract with the Spireites in April 2017.
Like his colleagues Joe Rowley and Charlie Wakefield, a series of impressive displays for both the reserve and youth teams saw him included in Gary Caldwell's first team squad in the latter part of the 2016/17 season.
Brownell made his debut during the final home game of the season against Charlton Atheltic where he appeared as a substitute.
The midfielder has been with the club since U14 level, having previously spent time with Sheffield Wednesday.
Brownell is currently on loan at Sheffield FC, with fellow academy graduate Jay Smith.