Having reportedly secured the signature of Nicolas Gaitan, Manchester United manager Sir Alex Ferguson appears to be turning his attentions to strengthening other areas of his squad.

Reports on Wednesday have claimed that United are pursuing Costa Rican left-back Bryan Oviedo. According to the Daily Mail, scouts from Old Trafford were sent to watch the 22-year-old in action for his club side FC Copenhagen in their 5-0 win at HB Koge on Sunday.

The international would be seen as a back-up for regular left-back Patrice Evra and would be available for an estimated £2 million ($3.2m), according to the Mail.

Another left-back who has been linked with a move to the Premier League leaders is Brazilian Guilherme Siqueira. There appears to be several clubs lining up moves for the 25-year-old who has been a virtual ever-present for La Liga side Granada this season.

But, according to Tribal Football, Siqueira is flattered to be talked about as a United target.

I am very happy with this news. If a good proposition arrives I am open to studying the subject, he said.

Attaining a new left-back could well be high on the agenda for United this summer, with Fabio likely to be sent out on a season-long loan, reportedly to Benfica.

And another player who has been linked with a move to the Lisbon giants is midfielder Anderson. The Brazilian has failed to establish himself at Old Trafford since joining in 2007 and United could finally decide to cut their losses with the 24-year-old this summer, according to the Daily Telegraph.

A likely destination for Anderson could be Benfica, with the Daily Mail reporting that he could be part of the deal to bring Nicolas Gaitan to Old Trafford.

A move that may suit all parties more is for Anderson to move on loan to Benfica next season, something that is being reported by Tribal Football. There is clearly talent in the energetic Brazilian and if he can get a full injury-free season of first-team soccer under his belt then he maybe capable of returning and making a significant impact with the Red Devils.

One player who is virtually certain to be on his way on a permanent deal come the summer is Tomasz Kuszczak. The Polish international has been eager for a move away ever since it became clear that he would not be the man to replace Edwin van der Saar in the United goal.

The 30-year-old, currently on loan at Watford, is out of contract in the summer and is being targeted by English Championship side Ipswich, according to the Daily Mail.

Joining Kusczczak through the Old Trafford exit door come the season's end could be young defender Ezekiel Fryers. The 19-year-old has yet to sign an extension to his deal that expires in the summer and Tottenham are said to be interested in attaining the player, according to Sky Sports.

The report also claims that Ferguson is eager to hold-on to the defender who would command a small compensation fee should he leave.