Moyes insists that Ferdinand, and long-time partner Nemanja Vidic, are still very much part of his thinking.
"Rio has had a few injuries and little niggles in his calf," said Moyes.
"But, overall, he is very much part of it.
"Rio and Vida [Nemanja Vidic] have been two of the best centre-backs in this Premier League generation. For the past 10 years, they've been terrific.
"I will continue using them but there are always going to be other people to come in. This club has to have a line of players ready to take their places and push them.
"The challenge is for the young players to take over. It's part of the job if you play for this club."