Moonan joined the club in 2011 and the midfielder was rewarded with a two-year scholarship at the end of the 2018/19 season.
The Wigan-born teenager can play in the central line of the defence, as well as in the middle of the park.
Moonan was an integral part of Tony Philliskirk's squad last season, with impressive performances in the League and in the FA Youth Cup, where the midfielder scored twice in the competition.
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