Arsenal boss, Mikel Arteta has said that the attitude, mentality and values of defender, Takehiro Tomiyasu are first-class. Arteta said this while reacting to Tomiyasu’s long-term contract with the Gunners. Arsenal had on Wednesday confirmed that the Japanese international signed a new long-term deal with the Premier League North London club. “We are so pleased to have Tomi commit his future with us. Together with his natural ability and strength, Tomi’s attitude, mentality and values are first-class,” Arteta told the club’s website. “Tomi is loved by everyone and has been an integral part of …