Moyes, who sent him on loan spells to Sheffield Wednesday and Leeds this term to gain experience, is wary of the rising clamour to stick him in every week.
He warned: "There has been a lot of stuff said because he came in and did OK but he has a lot of maturing to do.
"You should not expect to see him regularly yet.
"If I think he is the best man for the job, he will definitely play - but we have had a lot of good players in the middle. I will play him when it is right."