Norway manager Stale Solbakken believes Arsenal captain Martin Odegaard will be back next weekend.
Odegaard has been missing since suffering a concussion in training.
Solbakken said: "I've just come from a 45-minute talk with Martin.
"He is getting better and better and gradually stepping up.
"It has been more or less three weeks without any special training, so it is important to take things step by step. Both he and Arsenal probably hope that he is available for the Brentford match."
