Southampton need at least one new striker this summer but have been left disappointed in their pursuit of Manchester City forward Liam Delap. Russell Martin has been focused on defensive reinforcements so far this summer, with Adam Lallana the only one of Southampton‘s five signings that isn’t a defender. That theme looks set to continue, with the Saints on the brink of completing a deal for Japanese right-back Yukinari Sugawara. Martin currently has three senior strikers at the club with Che Adams out of contract, with Ross Stewart, Adam Armstrong and Sekou Mara the trio that remain. With tha…