Mumford, who has missed the Swans' past two games with a fractured cheekbone, was named in their extended squad for Sunday's MCG clash with Melbourne.
Provided he comes through a training session on Friday, his 27th birthday, 198cm Mumford could join 201cm Canadian Mike Pyke and 202cm recruit Kurt Tippett in the final 22.
Sunday could represent the first time all three have played together.
Former Crow Tippett missed Sydney's first 11 matches because of a suspension for his role in Adelaide's salary cap breaches.
Forward-ruckman Tippett kicked 2.2 in each of his his first two games for Sydney and was used sparingly in the ruck behind Pyke.
He could finally form a much-anticipated key forward partnership with another piece of tall timber, 196cm Sam Reid.
Premiership-winning forward Reid hasn't played since round nine due to a quad injury.
"Obviously Kurt has been great and he's a massive focal point down forward but I think you always need two ruckmen," Mumford told AAP.
"Me and Pykey, it's a big job to try and do it on your own, with a little bit of a rest with someone coming in.
"We're all very mobile for big men and can get down and pick up a ground ball.
"We're not afraid of getting down amongst the midfielders, so I don't see why there's any reason why we can't play all three."
Mumford will have his first contact session on Friday and has had some protective headgear made, which he could wear on Sunday.
"Just to give me that bit of extra peace of mind more than anything," Mumford said.
"I know that the bone has healed enough that it should be fine, but I'm just going to have the helmet there just in case.
"I'd hate to get another knock on it and go back to where I was."
Mumford felt prior to his facial injury he was just getting into his stride after a slow start to the season.
"Hopefully it won't take me too long and I'll hit some form again and I'll be back to my best," Mumford said.
Renowned for his fierce competitive spirit, Mumford was for once cheerful about being on the losing side in a sporting contest.
Mumford and three of his colleagues lost boccia matches on Thursday to teams made up of people who suffer from cerebral palsy, a condition which also affects Mumford's sister.
