The 27-year-old Englishman has been linked with a move away from Old Trafford this summer after having a transfer request rejected by the Red Devils in May.
“Overall, my thought on Wayne is, if for any reasons we had an injury to Robin van Persie, we’ll need him,” said Moyes.
Moyes also believes Rooney’s versatility makes the England international an important asset to the club, but stressed he won’t be held to ransom by the forward.
“Wayne can play up on his own, he can play dropped in. It’s going to be a time to see how I work with Wayne.
“I won’t allow Wayne Rooney to become more important than the football club and the football team, because that’s the heart of it.”
Moyes added that he is not under pressure to cash in on Rooney, who still has two years remaining on his current Red Devils deal.
“Maybe in a year’s time we might have to look at something else,” he added.
“The first year I have to get a chance to see the players and how best to use them.”