Sullivan's former clubs include Wimbledon, Tottenham and Leeds
Veteran goalkeeper Neil Sullivan has agreed a contract extension with Doncaster Rovers.
The 41-year-old former Scotland international will now remain at the Keepmoat until June 2013.
Sullivan began the season as number two to Gary Woods, but recently regained his first team place.
He joined Doncaster from Leeds four years ago, and was in goal when
Rovers beat his former club in the 2008 League One play-off final
Since beginning his career with Wimbledon in 1988, Sullivan has made more than 600 first-team appearances for clubs including Tottenham and Chelsea.
Rovers manager Dean Saunders told BBC Radio Sheffield: "I thought I'd done well to get to [continue playing until] 37 but he's four years on."