Melbourne defender Oscar McDonald has re-signed with the club until the end of the 2020 season.

Demons GM of football operations was excited by the the 22-year old's development and how he can continue to grow.

โ€œOscar is a young developing defender who has taken on a lot of responsibility within our defence,โ€ Mahoney toldย melbournefc.com.

โ€œHe has built strong understanding with his fellow defenders and we look forward to him continuing to develop in his role.โ€

Taken with pick 53 in the 2014 national draft, McDonald has played all 23 games for the Demons this season, taking his total tally to 60.