Initially used as a substitute he gradually became the focus of the team 's midfield and a regular starter as the season progressed and the team contested for a promotion place .
McDonald made his debut for the Blades against Brentford on 13 August 2011 .
Initially used as a substitute McDonald gradually became the focus of the team 's midfield and a regular starter as the season progressed and the team contested for a promotion place .
McDonald made his debut for the Blades against Brentford on 13 August 2011 .