United have been linked also with a number of midfield players, including Newcastle’s Cheick Tiote and Ajax’s Danish prodigy, Christian Eriksen.
Ferguson, though, insists the recent form of his team vindicates his decision to resist panic buying and keep faith in his current squad.
“The crucial thing, though, is to get our centre-backs back.
“That’s the only caution I have about my team. Forward-wise and in midfield, we’re OK.”