Aaron joined Berwick in January of 2017 in a loan deal from Dundee United, scoring on 3 occasions in the second half of the 16/17 campaign.
His performances were enough to earn him a permanent deal at Shielfield Park after agreeing a release from Tannadice Park.
The young forward will now be looking to recapture the scoring form which earned him a move to the Arabs, having hit 24 goals in a season at Lowland League side Spartans.
18/19 Home kit sponsored by Simon Crook, Kent.
18/19 Away kit sponsored by Aaron Robertson, Lasswade.