Now that the season has officially closed after Celtic’s Scottish Cup win at Hampden on Saturday, the talk will undoubtedly turn to the upcoming transfer window. With Celtic now guaranteed Champions League group-stage football, Brendan Rodgers knows that he will need to strengthen the first team if he wants to make a mark on the competition. The goalkeeping position will clearly be a priority after Joe Hart hung up his gloves after the Hampden cup win but the Celtic fans will be expecting to see a number of signings in key areas to help Rodgers restore Celtic’s standing on the continent. One o…