[4] Initially joining Coventry with a three-month contract,[2] the deal was extended for two months after Kelly scored four goals in six games for the reserve team.
[2] He was once considered "Peterborough's only skilful player",[9] the team's "leading marksman in 1984–1985",[4] and "on his day, the division's most dangerous striker".
[10] Although he was popular with Peterborough fans, over time he developed a public love-hate relationship with manager John Wile, and was disciplined on multiple occasions.
[8] During the 1986 Swedish football season, Kelly played for Grebbestads IF in the Third Division, and won the team award for top goalscorer, with six goals.
[11] By January 1987, he had returned to England to play for Peterborough United,[12] signing a one-year contract in June of that year,[13] but struggled with injuries.