"Everton have had a tough start to the season but they are a good side," said Wenger. "They have missed a few players through injury, such as Steven Pienaar, and Tim Cahill has been suspended recently.
"But when you look at their squad, you always expect that they can cause you a problem and be a dangerous side. They have Louis Saha and Yakubu in attack and Saha is just starting to fit in now. They certainly started well.
"You would think when everyone is fit for Everton, they have a strong side. I feel they will come back to their normal level and climb the table quickly. David Moyes is the third longest serving manager in the Premier League and I'm happy he's signed his contract.
"Some managers have that responsibility to show that stability is important - he has been there for six-and-a-half years and is signed now until 2013, which would take him over a decade. That is not very easy in our job."