 In 2017, Fahey returned to senior football and linked up with his former club Bluebell United in the Leinster Senior League Senior Division.Fahey played three games for Bluebell, a 3–0 FAI Cup First Round win over Sherriff YC, a 1–0 win over League of Ireland First Division side Cabinteely in the next round of the cup (Fahey was sent off in the last minute making him miss the FAI Cup Quarter final away to Shamrock Rovers) and his final appearance in football came in a 5–1 defeat of Firhouse Clover in a top-of-the-table Leinster Senior League clash.Fahey retired from football in November 2017 after twisting his knee in training once again, later stating that "I'm glad now that it's (his career) finished.