Later Boskamp became a manager and coached Belgian clubs Lierse, Dender, Beveren, Kortrijk, Anderlecht, Gent. He then moved to Georgiain 1999 to manage Dinamo Tbilisi and also the Georgia national team. After a return to Belgium with Genk he moved to the Middle East and managed United Arab Emirates side Al Wasl and Kuwait club Kazma. He became manager of English side Stoke City for the 2005–06 season. Stoke's Icelandic board wanted the club to start mounting a serious attempt at gaining promotion to the Premier League and so decided a change in style was required with Boskamp replacing Tony Pulis. He brought in a number of foreign players which included Carl Hoefkens, Hannes Sigurðsson, Junior N'Galula and Martin Kolář as well as domestic based players, Marlon Broomes, Paul Gallagher, Mamady Sidibe, Peter Sweeney and Luke Chadwick. He also broke the club record transfer fee with a £950,000 signing of Standard Liège striker Sambégou Bangoura. However results were often poor and after a number of heavy home defeats to Watford, Wolverhampton Wanderers and Cardiff City, and supporters began asking questions. Bangoura then went on a good run of form scoring seven goals in six matches as Stoke won six matches in November and December to give them a platform to build on going into the new year. But in one of those wins away at Coventry City Boskamp and his assistant Jan de Koning and director of footballJohn Rudge were involved in an argument which led to Boskamp almost resigning. Stoke began 2006 in terrible form winning just one match in ten and scoring a mere six goals in that time. Bangoura had been away on international duty with Guinea and failed to return to the club at the agreed date which caused the shortage of goals and with Stoke's season fizzling out with no chance of promotion Boskamp was not offered a new contract by Gunnar Gíslason. With the Icelandic board failing to gain promotion to the Premier League and with debts now at around £5million chairman Gunnar Gíslason put the club up for sale and he sold the club back to former chairman Peter Coates. Coates then re-appointed Tony Pulis as manager who had spent the season with Plymouth Argyle. He was then briefly manager at Standard Liège in 2006. In November 2007 he became coach of another Belgian club: FCV Dender EH, on 19 May 2009 he quit Dender after an argument with his coaching assistant Patrick Asselman, who has been named new coach. In June 2009, Boskamp signed with SK Beveren but was sacked in December 2009 after poor results.
