Manchester United will move into the transfer market in the summer to replace goalkeeper Edwin van der Sar.
The veteran Dutchman confirmed on Thursday that he would be hanging up his gloves at the end of the season.
Van der Sar's decision to call time on his illustrious career leaves Sir Alex Ferguson with a significant gap to fill in his starting XI.
The Old Trafford outfit have Tomasz Kuszczak and recent signing Anders Lindegaard waiting in reserve, but do not appear to have enough faith in either player for them to immediately become the new No.1.
Goalkeeping coach Eric Steele revealed that the Red Devils have a trio of players in their sights who they believe would slot in seamlessly and provide the essential last line of defence.
Steele said: "We could do it internally, but we have looked at the best targets and we have a nice one, two and three who we think can fill the job."
Germany international Manuel Neuer and Van der Sar's fellow countryman Maarten Stekelenburg have been touted as possible signings, along with Atletico Madrid youngster David de Gea.
Speculation suggested Liverpool goalkeeper Pepe Reina could be a shock target for their Premier League rivals, while Juventus' Italy international shot-stopper Gianluigi Buffon is another to have been linked with United.