The 33-year-old has not featured for the Whites since the end of August, having fallen down the pecking order behind Kieran Richardson.
When asked by the Fulham Chronicle if he would consider departing Craven Cottage in return for more regular action elsewhere, the defender refused to rule out the notion.
"I speak to the gaffer all of the time. We both know how I'm thinking. I'm obviously not happy not playing. I feel fit and if I get a chance I'm ready. If not, then we'll look somewhere else to see if I can get a move," he said.
"I'll remain professional, whether I'm going to leave or not. I always give 100% in training and if I play, the gaffer knows that.I'll work hard until January and see what happens.
"If it doesn't happen, then I'll work hard until May. I'm never going to be a player who moans. I want to keep fit, work hard every day and be ready if I'm needed. If not, I will look elsewhere."
Riise joined Fulham from Italian side Roma in 2011.