"He'll have to if he's going to play. If he does do that, then obviously he'll be right."
But Toovey did indicate that even if Lyon was less than 100 per cent - he may gamble on playing the star centre.
"I think with the do-or-die game that we've got, you probably have to," Toovey said.
"He is, in my opinion, the best centre in the game and without those quality players it makes your job more difficult."
Toovey was clearly upset at the charge handed down to Matai, but gave no indication whether they would take the early guilty plea and one-week ban.
"It's just so subjective," Toovey said of the grade two careless high tackle charge.
"I don't know how they come up with the grading."
- AAP