As the transfer window approaches, there will be plenty of like-minded Celtic people telling the club how to spend their money over the next few months. With the Champions League coming up and three domestic competitions to win, Brendan Rodgers will have a list of targets he has identified to help boost Celtic’s chances of competing on all four fronts next season. Joe Hart leaving this summer has made the goalkeeping position a priority for the Celtic manager but Neil Lennon has urged Rodgers to splash the cash on a player who has ‘huge potential’. Lennon would ‘definitely’ spend £5m on Adam I…