Arsenal have now confirmed that defender Takehiro Tomiyasu has signed a contract extension, keeping him at the club for the foreseeable future. The 25-year-old has struggled with injuries for large parts of the season, but hit his best performance levels when fit, and is a valuable asset for Mikel Arteta. Arsenal have been proactive in handing out contract extensions in recent months, with fellow defender Ben White also extending his terms last week, and they were keen to tie Tomiyasu down to a new deal after speculation linking him with Bayern Munich before the January transfer window. Direct…