Burns has been overlooked for Saints first two Super League games of the season. But with rake James Roby currently injured and battling to recover, the Australian stand-off is in line to replace him on Friday night.
“If he’s not 100% fit he won’t be playing against the Roosters,” he told Love Rugby League.
Cunningham said Burns has been training in the number 9 position.
“We’ll see where we’re heading,” he said.
“He might drop into that 9 role. We’ve been running him there in training, we’ve been running him there in the reserves game just to have a look at him.
“We’ve just got to see how he goes. He’s played a fair bit of footy at 9 for Penrith so he understands the role.
“He’s a physical person who likes mixing it a bit so it might suit us while Robes is sat on the sidelines. I’m sure he’ll feature but I’m not sure where.”
Speculation has increased on Burns’ future after missing the first two rounds.
Cunningham said the 32-year old has handled his omission the same as other players.
“He’s deeply disappointed but he understands that every decision I make is not personal,” he said.
“It’s not personal attack on any of my players, I’ve got to find the right balance for the team and what’s right for the club.
“It just flows a bit better so, it’s a good challenge for Travis.”