On 12 August 2014, Abbas scored two extra time penalties for Sydney FC in the club's first ever FFA Cup match away to Melbourne City. The game was locked at 1–1 at full time and looked to be set for penalties before firstly Corey Gameiro and then Terry Antonis were fouled in the penalty area, allowing Abbas to slot home in the 111th and 114th minutes respectively, giving Sydney FC a 3–1 win at the end of extra time. On 29 November 2014, in the Sydney Derby at Parramatta Stadium, Abbas suffered a severe knee injury which would prevent him playing for the rest of the season. The incident occurred in opening exchanges of the game when Iacopo La Rocca collided heavily with Abbas. The injury caused tears to both his anterior cruiciate and medial collateral ligaments of his knee.