Powell is expected to be recalled by Moyes and sent on-loan to Hull City.
"I took a number of his players to Brentford, and it worked very well.
"And I think Manchester United are very happy with the progress that Nick is making with us.
"The things that have appeared in the papers, I have no control over that at all.
"I can only refer to the direct conversations I have had with David Moyes, and we will have further conversations.
"Once those talks have been had, I will know for certain what is going to happen. But so far there has been no indication whatsoever that anything has changed on that score."