"What Leeds haven't revealed is that MaxSport was meant to receive 50% of anything over and above £5m," said Mandic.
"If we'd have sold Harry for £9m, MaxSport would have received £4m. At the end of the day, Leeds made that deal.
"When we talk about blackmail, what was put to us was 'if you want Harry to walk away with his head held high and for the supporters to continue to view him as a Leeds hero, you've got to take our deal."