The former England captain has struggled with injuries this term, falling behind Jonny Evans and Phil Jones in the pecking order, making just seven Premier League appearances this season.
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"Rio is back training," Moyes told reporters. "He is back and we will continue to use Rio at the right times and the right moments.
"He has made a great contribution, especially in the first half of the season. He has competition for centre half, but he is very much valued and looked at as one of the senior players here."
Moyes also revealed that Ferdinand helped him make the transition to Old Trafford after being named as Sir Alex Ferguson's successor.
He added: "He was a big part in helping me to settle. He helped me get my feet under the table a little bit."