 He returned to Reading at the end of the year, only to re-join Charlton again on 14 January in a new loan deal set to run until 11 February.However, on 28 January, Mooney's loan was extended until the end of the season.Mooney finished with six goals from a total of 31 appearances for the Addicks, with one goal coming on his last appearance for the club, a League One play-off semi-final defeat (Charlton had won 2–1 on the night, but lost the tie after a penalty shoot-out) against Swindon Town.