Leeds United need a big, marquee signing when replacing Crysencio Summerville before the August 30 deadline to appease fans and to try and cover the loss of The Championship Player of the Season. Of course, Summerville is about to be joined by Georginio Rutter in leaving Leeds with the Frenchman set to complete a £40m move to Brighton. Both need replacing, but Summerville maybe more so than Rutter. Leeds have other options in the 10 role like Brenden Aaronson and Joel Piroe. But on the left, Leeds really lack the quality of Summerville and only an expensive, proven, top-quality winger will lea…