sentences:  At the press conference, Lippi revealed that Zinedine Zidane had been approached to come out of retirement to play in the game, but the French midfielder had declined; Zidane's reasons were not made public, but it is believed that he did not want to play on the same team as Materazzi, whom he had infamously headbutted in the 2006 FIFA World Cup Final.On the day of the game, however, there were a number of withdrawals, most notably Ronaldinho, who aggravated an existing injury in Barcelona's game against Real Madrid the previous weekend.Other drop-outs were Oliver Kahn, Iker Casillas, Paolo Maldini, Lilian Thuram, Carles Puyol, Fabio Grosso, Miguel, Juninho and Ronaldo.