Arsenal are showing interest in Japan midfielder Shinji Kagawa, British newspapers reported Friday. The 23-year-old Kagawa has yet to sign an extension with reigning two-time Bundesliga champions Borussia Dortmund, who have offered him a new three-year deal, doubling his pay to 3 million euros per season. Both The Sun and Daily Mail said Arsenal boss Arsene Wenger is looking into signing Kagawa, who is also reportedly drawing interest from Manchester United, Chelsea as well as AC Milan.