Fuller believes Cullen would "breathe fresh life" into the Ferns team still hurting from an overtime defeat to Australia in the world championship final.
"Depending on who is out and who is taking a rest, I would hope she would be selected," said Fuller.
"Post-world champs, I think, it is a good opportunity for the coaches to run the young players so you can see what they've got."
Fuller said that regardless of whether Cullen makes her test debut this year, the athletic teen will be a key member of the Mystics line-up next season.
Cullen, who was named the best young player in the 2011 competition after making the switch from the shooting circle to the defensive end, is expected to continue to cover the wing defence-goal defence slide.
But Fuller also hinted the multi-talented star may be used as back-up at centre - something that doesn't faze Cullen in the slightest.
"I'd really enjoy the new challenge, I think, if I was given a go there. I'm up for a new position again. First season, I was a shooter; second season, defence; third season, midcourter would be good," she said.
Cullen had been on the radar of other New Zealand franchises but she said she never entertained any offers from other teams.
Cullen joins Temepara George, Anna Scarlett, Cathrine Latu and Maria Tutaia on the Mystics roster for 2012.
Also thought to be in the mix are sisters Rachel and Grace Rasmussen, the latter of whom is recovering from a knee reconstruction. Silver Fern Joline Henry is still to commit for next year. Australian veteran Megan Dehn is not expected to return.