At the time, Kaká's transfer fee from AC Milan to Real Madrid was reported to be the largest in the world, clocking in at ￡57.5m (€67.2m). However, in terms of euros, Zinedine Zidane's transfer from Juventus to Real Madrid in 2001 was the largest, at €76m (￡46m). Given that both transfers happened solely in the eurozone, with no English clubs involved, how can we claim this is a world record transfer?
Ed Lewis, London

Dear Mr Lewis,

The fact that the pound was strong in 2001 and weak today does not justify the suggestion that Kaká's transfer fee is larger than Zidane's, so you are right to query the way this has been reported. But the problem goes deeper than you suggest. Even if both transfers had taken place in the UK, a 2001 pound is not the same as a 2009 pound.