The Brazilian left-back joined the Gunners from Turkish club Fenerbahce in the summer and Edu feels he will be a quality player in North London once he settles and adapts.
"He is a very good player and a very good guy," Edu told the club's official website. "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.
"Before he came to London, Andre [Santos] spoke to me and asked me about Arsenal - and it's nice to see so many Brazilians here. If they are here maybe it is because me, Sylvinho andGilberto [Silva] did something good."