Sir Alex Ferguson believes the influence of the January transfer window is 'over-rated'.
Having secured Henrik Larsson on a short-term loan and recalled Giuseppe Rossi and half a dozen other youngsters from spells elsewhere, Ferguson is now pondering whether to make further reinforcements to his squad.
A move for Bayern Munich midfielder Owen Hargreaves is still being debated, while chief title rivals Chelsea are working out whether they need to bring in cover for a host of injured stars.
Many pundits have claimed next month's market moves will be crucial in determining the destination of the major prizes.
However, given the restrictions on the number of players available, Ferguson doubts any new signings will have a dramatic effect.
'The influence of the transfer window is over-rated in the sense of what you can really do,' he said. 'If you have ambitions in the Champions League, the Premiership and the FA Cup you are limited in terms of the number of players you can choose.
'We have signed players in the past but it is not necessarily the case we will sign someone this time. We may, or we may not. It depends on a lot of things.
'But I am happy we have Henrik Larsson coming in and also with the improvement in Alan Smith. And, now Ole Gunnar Solskjaer is fit again, he will definitely get us 15 goals.'
Ferguson did splash out £12million on Nemanja Vidic and Patrice Evra 12 months ago, while in years gone by Louis Saha and Andy Cole have both arrived in mid-winter.
However, given the time Vidic and Evra took to settle in at Old Trafford, it is understandable why Ferguson prefers to concentrate on his current squad as United look to consolidate their four-point lead at the top.