Watson was one of his side’s stand outs in Friday’s win over the Sydney Roosters, while Levi will head for scans after going down early in the clash with an ankle problem.
Brown was confident that Levi’s injury was nothing serious.
“Danny’s got an ankle problem but I don’t think at this stage it’s going to be major. Whether he’s out short-term or not I’m not sure,” Brown told The Daily Telegraph.
“But he’s certainly not a disaster anyway.”
Watson now figures to play a key role for the Knights moving forward after coming off the bench over the last two weeks.
He could find himself in the No. 9 jersey when Newcastle return from their bye against the Rabbitohs.
“We’d definitely have a look at it,” Brown said.
“It’s not his first time there and he’s played big minutes and he’s a very fit kid. Obviously he’s not the biggest, but his fitness is great. And he’s tough.”
Brown was confident in his side’s form moving forward, currently riding a five-game winning streak.
“It’s big if we can maintain some form and consistency. We go Souths and Melbourne our next two games, so they’ll be great tests,” Brown said.
“From where the club’s been and what we’re coming through, it was only a couple of years ago the Roosters really give us some big scores against us.
“So to be able to get a win against those guys is pleasing for the club.”