United had been linked with a move for Everton's Leighton Baines and had that materialised, Buttner would have found himself third choice for the left-back slot.
However, Moyes' pursuit of Baines ended after the two clubs were unable to agree a fee for his services, leaving only Patrice Evra ahead of the 24-year-old.
Buttner explained that his manager had reassured him that he was still in his thoughts, and revealed that talks over a new contract are to begin soon.
"Last Wednesday I had a good meeting with our manager David Moyes," he told De Telegraaf. "He told me that I will play enough this year at Manchester United.
"He absolutely didn't want to let me go. He sees me as a full United player.
"The club now want to talk about a new deal. That shows a lot of appreciation."
Since his arrival from Vitesse, Buttner has only made five league appearances for United, and has yet to feature under Moyes this season.
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