 Although a regular in the club's reserve team he only made a handful of first team appearances during his three seasons with the club; his route to the first team being blocked by the form of regular striker Danny Hale.Despite his limited appearances for Derry, Bradley had impressed Finn Harps manager Patsy McGowan and a fee of £100 secured Bradley's services for the Harps' League of Ireland debut season, 1969–1970.The season saw him score his and the club's first hat-trick in senior football in the away fixture with Athlone Town and his tally of 18 league goals was the highest in the league.