Celtic’s summer transfer window has been the subject of much speculation ever since the team’s performances on the park started to suffer. Celtic added eight players to the first-team squad last summer and many have now found to be wanting. With Brendan Rodgers wielding the axe in January, the Hoops gaffer let Marco Tilio and Hyeokkyu Kwon out on loan and Gustaf Lagerbielke almost being shown the door, it is pretty clear what Rodgers thinks of the players he signed last summer. Which is strange because the Celtic manager signed off on all of them so surely he would have known what he was getti…