Edu is a former Gunners favourite and is pleased to see his countryman now with the Londoners.
"He is a very good player and a very good guy," Edu told Arsenal.com. "With the ball he is technically fantastic, a typical Brazilian player.
"But every Brazilian needs time to adapt to the league because the English league is so different. I am 100 per cent sure that the fans will love him because he is very good with the ball."