Sir Alex Ferguson claims Arsene Wenger was left 'incredulous' by the unwillingness of Manchester United to pay £25 million to acquire the services of Robin van Persie from Arsenal.
Van Persie made his controversial transfer to Old Trafford in the summer transfer window of 2012, having requested to leave the Emirates Stadium with only a season left to run on his contract with the club.
The Netherlands international cost Manchester United an initial fee of £22.5 million, plus success related future add-ons, but Ferguson has revealed that Arsenal had initially requested a more substantial fee for their captain.
In his autobiography, Ferguson has detailed the conversation he had with Arsenal counterpart Wenger with regards to the proposed transfer of Van Persie, and explains how he managed to get the Frenchman to lower his demands.
But, explains Ferguson, Wenger was initially far from receptive to the idea of Manchester United not meeting the asking price Arsenal had set for the striker.
"I warned Arsene we would never get to £25m. Arsene was incredulous. He could not believe that Manchester United wouldn't stretch to £25m for such a player," wrote Ferguson.
"I told him again: I wouldn't go to £25m. Arsene asked what my best offer would be. Answer: £22m. The reply was that Arsenal would take £22.5m and a further £1.5m if we won the Champions League or Premier Leaguer during the period of his contract. Deal done."