North Melbourne has re-signed 2010 draftees Cameron Delaney and Ben Mabon.
"In the coming years when we've still got a few key-position players, hopefully my agility and ability to play on smalls and third talls will help me keep a spot in defence," Dalaney said.
Mabon says working with senior players Hamish McIntosh and Todd Goldstein has helped with his development as a ruckman.
"Hamish is a ball magnet and tells me where to run when I go through the vision of my games with him every week, and on the track 'Goldy' is an elite runner and a genuinely good tap ruckman," Mabon said.
"It's fantastic to learn off both of them and I'm try to take as much in as I can."