Manchester United manager Louis van Gaal is reportedly interested in Tottenham’s Kyle Walker, as the Dutchman looks to bolster his options at right-back.Antonio Valencia has often been deployed on the right this season, while Brazilian international Rafael appears out of favour with the United boss, although he has missed a bulk of the campaign through injury.Walker is one of a number of names linked to United, but who could the Red Devils sign on the right side of their defence? Take a look at the options above.Click the arrow to see five possible right-backs who Louis van Gaal could sign in the summer and let us know who you think should move to Old Trafford… 5 5 Dani Alves (Barcelona) – Click the arrow to see the Southampton star linked to Old Trafford – Alves has less than six months to run on his current contract, meaning he would be able to leave Barcelona on a free in the summer. The Brazil international has made over 300 appearances during his time at Barca and won 16 major honours, but his time at the Nou Camp now appears to be at an end. United have reportedly discussed a £100,000-a-week contract with the 31-year-old. Seamus Coleman (Everton) – Click the arrow to see the Spurs star on United’s radar – Alternatively, the Red Devils could move for the Everton’s Irish full-back. The Toffees have dismissed speculation linking Coleman with a move, but the 20-time champions could be tempted with a £20m bid. Coleman impressed last season, and was arguably the best right-back in the Premier League. He has stuttered this season as Everton struggle domestically, but at just 26, the Irishman still has his best years ahead of him. 5 Nathaniel Clyne (Southampton) – Click the arrow to see Irish international interesting the Red Devils – The England right-back has been a long-term target for Manchester United and they could have landed him when Clyne moved from Crystal Palace to the Saints in 2012. The 23-year-old has been one of the most impressive players for Southampton in their challenge for the top four places this season, and while reluctant to sell, a big offer and move to Old Trafford could be too hard to turn down for Clyne. 5 Kyle Walker (Tottenham) – Click the arrow to see the Porto man who could move to England – The 24-year-old recently returned from nine months out with a pelvic injury, and his performances last season earned him recognition with England. The right-back has four years left on his contract and would command a fee of around £20m if United were to pursue a deal. Walker was named the PFAs Young Player of the Year in 2012 and Spurs chairman Daniel Levy could decide to cash-in on the former Sheffield United man. 5 Porto star Danilo has been linked with a move to Old Trafford – Though only 23-years-old, Danilo has already had a successful career both in Brazil and Europe. With Santos, the full back was part of the Neymar inspired team that won the 2011 Copa Libertadores, while with Porto he has won two Portuguese titles. The Brazilians contract expires in 2016, and Porto may choose to sell the defender this summer to maximise his sale value.