The 34-year-old's current deal runs out at the end of the season and discussions over an extension with the Red Devils have yet to take place.
However, manager Sir Alex Ferguson has hinted that he wants Ferdinand in his squad beyond next summer by claiming that he can play into his late thirties.
"It is always good to hear the manager say things like that," Ferdinand told Inside United. "But you have to take every week and month as it comes.
"The best thing I can do is to look at it at Christmas, and then again in the summer, to see how I'm feeling and go from there.
"But hearing the manager say things like that definitely puts the spring back in your step."
Ferdinand joined United from Leeds United in 2002 and has won the Premier League five times and the Champions League once since then.