From 1989 to 1991, Buter was coach of Dutch first division club FC Wageningen, and in successive seasons took the club to 10th and 15th positions in the league. In his second season with Wageningen he shared his duties with Willem van Hanegem (who went on to coach FC Utrecht), as his assistant coach.
In 1991 Buter moved to the Haarlem club FC Emmen. But he only managed an eighteenth place finish, and was replaced by René Notten. Buter then moved on to FC Eindhoven for one season.
In 1993 he took a break from his coaching career, but returned in 2006 to take on the role of Technical Director at FC Utrecht, where he stayed until 2009.