Cahill has missed the last two games with ankle trouble.
"Physically, I'm fantastic," said Cahill. "When you get 2-3 weeks off ... you end up going in the gym and working on other parts of your body to get stronger and that's what I've done. I've actually enjoyed the other side of being in the gym again.
"It's all about getting out and getting used to crosses again and footballing, and when the game comes, getting the service to deliver. I'm excited because we're doing really well and the team seems to be growing and now it's about taking that into the next game against Dallas.