The former Gunners captain knows manager Arsene Wenger is keen on the Fiorentina midfielder and said: "We heard rumours and he asked me. I said it's a fantastic club and if he's interested he should go without thinking.
"He is exactly what they need - a powerful player with quality.
"If they got him it would be great because he is a player they need at the moment.
"I'm sure if they got him it would be a good signing. I have told him Arsenal is a great club and I am sure next season they will improve."