Glory announced today that the duo had quit the club.

The WA outfit has endured a horror injury run with both Warren (ankle) and Nichols (hamstring) seeing extended time on the treatment table.

In a statement the club said Nichols had left due to family reasons, while Warren was allowed to move on in order to "explore opportunities elsewhere".

Nichols returned home immediately to be with his family.

“We would like to take this opportunity to thank both Mitch and Marc for their services to the club and wish them all the very best in their future endeavours," Glory CEO Peter Filopoulos said.

Marc Warren battles with Sydney FC captain Alex Brosque

Glory welcomed back Nichols with a two-year deal in June last year - three weeks after the attacking midfielder admitted to the possession of a small amount of cocaine following a police sweep of Sydney's Casablanca nightclub.

The 28-year-old has previously played for A-League clubs Brisbane Roar, Melbourne Victory and Western Sydney Wanderers.

Former Sydney FC left back, Warren, was playing in the NPLNSW when he was thrown a professional lifeline by Glory in 2015.

The club is currently sitting in 8th place on the league ladder, just two points above last spot and seven points adrift of the top six.