Roger Varian has revealed Neil Callan will no longer be retained as his stable jockey for the forthcoming Flat season.
The pair have built up a good relationship over the past couple of seasons, but the Kremlin House trainer has decided he no longer needs a retained rider.
He told www.varianstable.com: "Neil Callan will no longer ride as first jockey for me this year.
"However, he will continue to ride for the stable if and when he is available on a freelance basis.
"I would like to thank Neil for his dedication and hard work over the last two seasons.
"I have enjoyed working with him and we have had a number of good days, most notably his win aboard Eton Forever in last year's Buckingham Palace Stakes at Royal Ascot - my first winner at the Royal meeting.
"As a trainer I would like a little more flexibility when it comes to jockey bookings.
"It might be that a 'best available' policy is followed at times.
"Andrea Atzeni will continue to be given opportunities but also on a freelance basis.
"There will also be rides for Dominic Fox as there was last season when he returns from injury."