Some association football clubs have started doing this as squad numbers have become common. AS Roma, AC Milan, Ajax, Internazionale, Napoli, Manchester City, Lens, Lyon, Nantes and Swansea City have all retired shirt numbers; Milan retiring Franco Baresi's #6 shirt and Paolo Maldini's #3 shirt (with the caveat that one of Maldini's sons can wear the shirt if they play professionally for the club). Swansea retired the shirt number of Besian Idrizaj after he died in his sleep, of a suspected heart attack, at his family home in Linz, Austria. Manchester City, Lens and Lyon all retired the shirt number of Marc-Vivien Foé after his death on the field in the 2003 Confederations Cup; the Cameroon national team also attempted to retire Foé's number, but FIFA prevented them from doing so. FIFA also rejected an attempt by Argentina to retire the number #10 of Diego Maradona and an attempt by The Netherlands to retire the number #14 of Johan Cruyff.