 Milsom made his debut for the club two days after signing for the club, in a 2–0 win over St Mirren and then scored his first goal in the return game on 6 April 2011, which Aberdeen would lose 3–2.Having been in the first team, making twelve appearances and his own desire to stay at Aberdeen, Milsom signed a new two-year contract with "the Dons" on 22 April.After Aberdeen finished in ninth place, Milsom stated that he felt Manager Craig Brown would have helped the club qualify for European competition had he joined at the start of the season.