Career
In 1985 de Haan joined sc Heerenveen as assistant coach. He would go on to spend 20 years with the club, the longest time a coach worked for a Dutch professional football club. De Haan was made head coach in 1992, and in 1993 led the club back to the Eredivisie. The finished in second place in the Eredivisie with sc Heerenveen in 2000, thus qualifying for the UEFA Champions League for the first time in the club's history.
In 2003, he received the Sport Award and on 10 May 2004, after his final game as coach of SC Heerenveen, he was invested as a Knight of the Order of Orange-Nassau. He was successively appointed as coach of the Netherlands national under-21 football team (Dutch: Jong Oranje), with whom he won the 2006 UEFA European Under-21 Football Championship and 2007 UEFA European Under-21 Football Championship. A semifinal spot in the latter tournament also qualified the Dutch for the 2008 Summer Olympics football tournament, leading his side to the quarterfinals where they were ultimately defeated by Argentina after extra time.
De Haan had announced that he would retire from football at the end of the 2008β09 season, when his contract with the KNVB expired. Instead he returned to work as a senior advisor at sc Heerenveen, before being appointed head coach at South African Premier Soccer League club Ajax Cape Town.
De Haan managed the Tuvalu national football team through their 2011 Pacific Games campaign. De Haan left his post after the tournament to rejoin the youth program of sc Heerenveen.
Dutch women's national football team.
From the summer of 2016, De Haan was an advisor to the Dutch women's football team. De Haan became assistant to national coach Sarina Wiegman in the women's team in January 2017. In August 2017, he won the European Football Championship in his own country with the women's team. Hereafter, De Haan retired from the team.