Twin brother of defender Frank de Boer, Started career with Ajax Amsterdam (87/91), Left Ajax for Twente Enschede (91/93), Returned to Ajax during the 92/93 season
Has won four league titles (94, 95, 96 and 98) and one Dutch Cup (93) with Ajax, Won the UEFA Champions League, European Supercup and the unofficial World Club Cup in 95 with Ajax
Runner-up in 96 UEFA Champions League with Ajax
This season, double League and Cup