Arsenal's Brazil Under-23 striker Gabriel Martinelli has signed a new long-term contract at the Premier League club. The news comes 48 hours after fellow teenager Bukayo Saka, 18, also agreed a new long-term deal with the Gunners. The 19-year-old Martinelli - who penned his new contract exactly a year after joining Arsenal - has scored 10 goals in 26 games for the club since moving from Brazilian side Ituano last year. He has been sidelined for the rest of the season after suffering a knee injury in training which required surgery. [nL4N2E325S] "I am very happy that Gabi has signed a new contract with us," manager Mikel Arteta told the club website here "He is a very talented young player and he has impressed us with his performances, attitude and work-rate. “We are looking forward to getting him back to full fitness and to watching his development at our club.” Martinelli is the first teenager to score 10 goals in a season for Arsenal since Nicolas Anelka over 20 years ago. (For more sports news and updates, follow Ahram Online Sports on Twitter at @AO_Sports and on Facebook at AhramOnlineSports.)