And there's good news! Danny Welbeck (remember him?) is set to be back with the first-team in January.
“He’s ahead of schedule and he’ll be back in January," said Wenger.
"It will take two months competition for him to get back to his best.”
The Frenchman also says he was right to give Mesut Ozil and Alexis Sanchez an extended break. And he's reaping the benefits now.
"I gave Mesut Ozil and Alexis Sanchez extra time to recover over the summer, and I believe that was the right decision.”
Wenger says he's proud of his medical department given the kind of impact they've had on reducing muscle injuries.
"We’ve improved on muscular injuries tremendously over the last two or three years and hopefully we can continue that.”
“We live in a jungle where everyone wants to eat you and you have to keep your vigilance.
“Thats what competition is all about.”
When asked about Mesut Ozil and Alexis Sanchez's contract situations, Wenger said, “We are in touch and that is our desire.
“Ozil is 28 and is in the prime of his career. We want him to contribute to the club’s future.
“I believe he is in the right place.”
Meanwhile, Olivier Giroud could return next week while Aaron Ramsey is 'progressing well' but still a few weeks away.
And he starts off with the team news. No changes or Arsenal apart from Santi Cazorla who took a knock against Ludogorets while Granit Xhaka is suspended.
Wenger is finally here. Late as usual, the Frenchman.
Stoke City manager, Mark Hughes, is thrilled with Joe Allen's goal-scoring form. "When Joe gets in good positions he is able to take them. He's getting into positions that a striker does & finishing like one too!"
Real Madrid director, Santiago Aguado: “Yes, I’d like to see Chicharito back at Real Madrid as we feel that he is an excellent player.”
Before we get to the start of the press conferences, here's what Jose Mourinho had to say about Paul Pogba after Manchester United's 4-1 win over Fenerbahce in the UEFA Europa League.
"First of all, in some of your mouths, he goes from the worst player in the Premier League to a great player in 48 hours," said Mourinho.
"I am not specifically saying it is you. I say media, especially the Einsteins. We know he is a very good player. We know he needs some time to show his potential.