The 22-year-old lost his spot in the side after the club's shattering defeat to the Lions in Round 15 and had to prove his worth with North Ballarat. That meant missing the Roos' brilliant win over Hawthorn on Friday night.
Mullett has been thrown a lifeline, with Liam Anthony dropped despite the team coming off a 20-point win over the reigning premiers.
Vice-captain Jack Ziebell failed a fitness test on his injured knee during the week and will be forced to miss another match.
Trent Dumont and Majak Daw have been named as emergencies for the second consecutive game, alongside Brad McKenzie.
Meanwhile St Kilda has made four changes. The Saints included veterans Sam Fisher and Lenny Hayes, along with Tom Curren and Tom Hickey. The quartet replace Trent Dennis-Lane, Jack Steven, Billy Longer and Darren Minchington.
Team v St Kilda
B: Luke McDonald, Scott Thompson, Scott McMahon
HB: Shaun Atley, Lachlan Hansen, Michael Firrito
C: Sam Gibson, Andrew Swallow, Sam Wright
HF: Brent Harvey, Aaron Black, Nick Dal Santo
F: Ben Brown, Drew Petrie, Lindsay Thomas
Fol: Todd Goldstein, Ben Cunnington, Levi Greenwood
Int: Ryan Bastinac, Ben Jacobs, Leigh Adams, Aaron Mullett
Emer: Brad McKenzie, Trent Dumont, Majak Daw
In: Aaron Mullett
Out: Liam Anthony (omitted)
