The Gunners legend believes Odegaard wouldn't walk straight into the Emirates midfield and hopes the club have done their homework.
“I don't think he'd walk into the team by any stretch," he told Astro SuperSport.
“You think back to Denis Suarez [the season before last] who came to the club and physically he just wasn't ready and then he picked up injuries.
“It was a bit of an embarrassment in the end, so hopefully they will do their homework on Odegaard.
“He's a young player that went to Real Madrid, and so much is expected of him, and as so often happens it doesn't quite materialise like that."