Moyes told the club website: “We know that going to Charlton will be tough, with a new manager there.
“It’s his first home game and his players will want to perform in front of their own crowd.
“We certainly need to be aware of that because you see it so often. A new manager can come in and make an immediate impact and we need to be ready for that at Charlton.
“They are a very capable side and with the likes of Andy Reid, Darren Bent and Marcus, who we had here of course, they have creativity. They have some good players but unfortunately for them the season hasn’t started as well as they would have liked.”