Celtic have several positions that will need strengthening this summer as Brendan Rodgers looks to expand his squad depth. Exploring the transfer market not just in Europe but worldwide has served Celtic well in recent years, with Japan becoming a particularly happy hunting ground for our recruitment staff of late, evidenced by the success of Reo Hatate, Kyogo Furuhashi and Daizen Maeda. Of course, there are also benefits to be had by looking towards Major League Soccer as an avenue for new additions, given Alistair Johnston’s impact in green and white since arriving from CF Montreal in Januar…