15. Alessandro Del Piero
Massimo Pinca-/AP/Press Association ImagesThis is a curious one as it actually seems to be on-going to this day, with Del Piero recently speaking of his desire to join Celtic, using the press to pass on the message to Glasgow's East End. This strange transfer attempt comes two years after Del Piero claims Celtic initially showed interest in him. According to the 39 year old, Lennon, looking to build on his dynasty, approached Del Piero, who apparently found the move appealing, yet obviously not as tantalising as moving to Sydney FC. This resurged bid from the Italian to restart his career and play for a Champions League team again is not being taken too well by Celtic fans, who seem to think the plea sounds a little desperate, and too little too late. The fact that he is actually older than the club's new manager, Ronny Deila, is also something of a turn off.