The 26-year-old, who has been at the Keepmoat Stadium since 2008, has played 58 games for Sean O'Driscoll's side.
Romford-born Spicer, who started his career with Arsenal, joined Bournemouth in September 2004 before stepping up two levels with Burnley a year later.
He then spent three seasons at Turf Moor before moving on to Rovers.But has struggled to win a first team start this season and could be set to depart Doncaster
Source: BBC Sport