Mitch King signs a new deal with Melbourne to remain at the club in 2018.
King, 20, has had a tough start to his career at Melbourne after rupturing the anterior cruciate ligament in his right knee in his first year at the club in April 2016.
The 200cm big man returned to the VFL fold after missing the first month of the season, starting in the VFL Development League and then for Casey's senior team.
"We really liked the way Mitch developed through the year and we look forward to him having a good pre-season out of rehab and hopefully he can build into next season," Melbourne football manager Josh Mahoney said.