After his stint with TV Lich, Leibenath moved to Gießen 46ers where he worked as an assistant coach for six seasons.
At the end of his first season in British basketball, Leibenath reached the BBL Cup final, eventually losing to Guildford Heat 82–79, while also finishing 4th in the League Championship, and lead the Rocks to the BBL Playoff final, losing eventually to Newcastle Eagles.
In 2008, Leibenath returned to Germany, taking over as head coach of Artland Dragons basketball team.
In May 2010, team management decided to release Leibenath who moved to GiroLive-Ballers Osnabrück in the German Pro-A league (lower division).
[2] In March 2019, it was announced that Leibenath would step down after the end of the season and would assume the function of Sports Director at ratiopharm Ulm.