The 112-test former All Blacks first five, 38, signed for the Blues as injury cover and had been pencilled in on their bench for a 18 July match with the Wellington Hurricanes. Carter, however, suffered a calf strain and was forced to withdraw from the matchday squad.
In a social media Q&A session, he said his expectations of getting game time had been low in any case before the injury.
"I wasn't really expecting to (play) to be honest, unless there was an injury to Beauden (Barrett) or Otere (Black)," Carter said.