Ger Lyons will no longer train for Qatar Racing or Pearl Bloodstock Limited.
David Redvers, Qatar Racing manager statement:
"It is with some regret that due to a difference of opinion Qatar Racing and Ger Lyons have decided by mutual consent to part.
"Ger is a personal friend and his operation were responsible for many great days, including Lightening Pearl winning both his and our first Gr.1 in the 2011 Cheveley Park Stakes.
"We wish him and his top-class team at Glenburnie much success in the future and thank them for the many successes we enjoyed together."