The 32-year-old striker has only started once for the Potters this season, which resulted in a red card during Stoke's 1-0 defeat to Chelsea earlier this month.
"It will be determined really by Ricardo as much as anything else," said Pulis. "Ricardo and his agent have to decide what they want to do, but Ric doesn't have anything to prove to anybody at this club.
"He's a top player and a fantastic lad. He can be a little bit off the wall at times, but that's Ricardo."
Fuller has been with the Potters since 2006.