Gabriel Martinelli has signed a new long-term contract with Premier League side Arsenal. The 19-year-old Brazilian forward put pen to paper on his new deal exactly a year after he joined London club. The Arsenal youngster has scored 10 goals in 26 appearances for the Gunners this season since joining from Ituano last summer. "I am very happy that Gabi has signed a new contract with us. He is a very talented young player and he has impressed us with his performances, attitude and work-rate," Arsenal manager Mikel Arteta said in an official statement.