Celtic will need to rejuvenate their squad come the summer as they look to build for the future under Brendan Rodgers. Entrances and exits are always likely during the middle of the calendar year; however, it is unlikely that Rodgers would look to enact a drastic squad rebuild. Nevertheless, players will move on either to pursue a new challenge or to adhere to the Irishman’s wish to trim his squad in numbers. The 52-year-old spoke about his ideal squad size late last year, stating: “Ideally we’d have a squad of 25 players, 22 with three goalkeepers. In which case, there will also be an opportu…