David Moyes says there are no guarantees that new players will be brought to Old Trafford in January.
The Manchester United manager had a disappointing and frustrating time in the summer transfer window, only managing to make one major addition in the form of Marouane Fellaini.
After a poor start to their Premier League campaign, which has seen them draw three and lose three, it was generally thought that Moyes would look to rectify his failings in the summer by strengthening the United squad at the first opportunity.
But Moyes has said that he won't be spending money for the sake of it when the window reopens in the new year and will only bring in players if they are right for the club.
He cautioned fans that players that meet the right criteria might not be available half way through the season.
"Only if the right players are available," he said to reporters. "They have to be able to fit into our squad. We would like to but there are no guarantees."
Moyes also hinted that he won't attempt to take Leighton Baines from Everton again, after failing to do so in the summer.
Everton have said that they are not willing to let him go and Moyes may see another attempt as futile.
"If they are determined to hold on to him then he can't be going anywhere," said Moyes.