Curran made his Limerick debut on 10 March 2013, in a 0–0 draw against Cork City, where he played 90 minutes, playing as a centre-forward. Curran scored his first Limerick goal one week later on 23 March 2013, in a 2–1 loss against Sligo Rovers Two weeks later on 2 April 2013, he scored his second Limerick goal, in a 1–1 draw against Shamrock Rovers. Two months later on 29 June 2013, Curran scored his third goal of the season, in a 3–2 win over Dundalk.