ARSENAL have a HUGE summer of business to take care of in the transfer market.The Gunners have announced the £51million signing of Martin Zubimendi from Real Sociedad.Elsewhere, Viktor Gyokeres is reportedly willing to give up around £2million of his salary to help push through a move to the Emirates.Meanwhile, Chelsea are braced for offers of more than £50m for Noni Madueke after Arsenal AGREED personal terms with the winger, according to reports.WATCH THE CLUB WORLD CUP ON DAZNFollow ALL of the latest news, rumours and transfer updates from the Emirates below…