The 23-year-old has penned a three-year deal keeping him at the club until at least the end of 2018.
Murdoch struggled to break into the senior side in his first few seasons, before becoming a regular in the Cats’ line up for the past two years.
“I have really enjoyed playing in the midfield this season, and I have set myself to become an inside midfielder in the years to come,” Murdoch told the club website.
“I will also continue to pride myself on being versatile. I know that the coaches will need me to contribute in a range of different roles over the coming years.”
Read more at AFL.com.au