Career
Warrender has previously played for Manchester City, in his hometown, and Blackpool. He also had a spell in America with San Francisco Seals. He then played for the club for two seasons.
He appeared 47 times for the club before leaving in December 2009 to take a break from football due to a hip injury.
He subsequently played for Ramsbottom United for a season between 2010 and 2011. He rejoined F.C. United in February 2012.
In March 2012 he rejoined Ramsbottom United. In the summer of 2014 he moved to Salford City. before quickly moving back to Ramsbottom United after the beginning of the season.