Sir Alex Ferguson admits he is ''shocked and surprised'' by Manchester City's stunning £108million bid for Kaka.
Ferguson has never been afraid to spend big money on key players. The arrivals of Juan Sebastian Veron and Rio Ferdinand to Old Trafford broke previous British transfer records and only this summer he splashed out £30.75million on Dimitar Berbatov.
But even the Manchester United boss has been taken aback by City's offer.
It is not the team doing the buying that has caught him off guard, or even the fact AC Milan appear willing to sell.
For Ferguson, it is the sheer enormity of the sum, well over double the most any club has paid for a player in the history of the game - Zinedine Zidane's move from Juventus to Real Madrid for £46million in 2001 - that has left him gob-smacked.
''I find it hard to get my head round to be honest,'' he said. ''It is amazing. Football is football. From time to time you get shocks and surprises. This is surprising everyone.''
Ferguson is not convinced the staggering deal would have a knock-on effect throughout the game if it goes through.
United midfielder Michael Carrick, who left Tottenham for a not inconsiderable £18.6million in 2006, has no view on whether lavishing such sums are morally right or wrong.
However, it is clearly a move that has got the United dressing room buzzing, with the England midfielder left as stunned as his manager.
''That amount of money being bandied about is a bit of a shock really,'' he conceded. ''When Manchester City were taken over we were told they had a lot of money to spend and big names were being talked about.
''But for it to be so much over the top is pretty mad really.''
While AC Milan seem happy to do business, City owner Sheikh Mansour knows there is a lot of negotiating to do with Kaka and his advisers before the Brazilian commits his future to Eastlands.
A key meeting between the Blues and Kaka's father has been pencilled in for next week, after which the picture will become clearer.
Carrick is not certain Kaka will eventually sign. But the former West Ham star would be delighted to see the former world footballer of the year in the Premier League, even if it was in the shirt of United's local rivals.
''We want the best players in this league and he is definitely one of them,'' said Carrick. ''It will be interesting to see what happens.''