The Pilgrims' manager was happy enough with a point against City who boast an unbeaten home record but was disappointed not to claim all three having led at half-time.
Greene praised goalscorer Conner Robinson following his second strike in two games for the Pilgrims.
The United chief looked ahead to Saturday's clash against Hednesford Town and facing either Tividale or Leek Town in the FA Cup a week later.
VIDEO: Dennis Greene interview
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