Career
He is currently the manager of DSK Kölane Born in Cologne, West Germany, his youths club were Fortuna Köln, 1. Football Club Köln and British Columbia Efferen.
From 1989 until 1995, he played for low-tier sides Spfr Neitersen ("89-"92) and VfB Wissen ("92-"95) before joining fourth-tier SCB Preußen Kölane
In 1996, he transferred across the Rhine river to play for Bundesliga side Bayer Leverkusen. However, being third goalkeeper, he didn"t get to play a single match.
In June 1997, he therefore transferred to newly promoted English Premier League side Barnsley for £250,000. Leese played in England for just two seasons, appearing in 16 league games and four League Cup matches.
After his two-year contract at Barnsley wasn"t extended, he returned to his native Cologne and played the 2000-2001 season for Preußen Köln and from 2001 to 2003 at the reserves of Bundesliga side Borussia Mönchengladbach.
Two more seasons at 1. Football Club Köln followed, where he was captain of the Reserve team and also called up as a substitute for some Bundesliga matches in the 2004-2005 season. In the summer of 2005, he ended his active career.
From 2005 to 2011, he has been the coach of fifth-tier SV Bergisch Gladbach 09.
In 2011, he took over at SSVg Velbert. On 5 May 2015, it was confirmed, that DSK Köln new manager was Leese.