2. Mats Hummels (Borussia Dortmund) – Click right to see which European sensation could join imminently… – Just like with Ilkay Gundogan, Man United may use the uncertainty at the Westfalenstadion to prise one Dortmunds biggest assets away from the club. Hummels, a World Cup winner last summer, would cost around £35m but, according to the Daily Express, the Red Devils are willing to pay this. 3. Paul Pogba (Juventus) – To find out which world-class defender could join Man United in the summer click right… – One of the summers biggest stories is likely to be a transfer saga involving the France sensation. His agent, Mino Raiola, claims he is being regularly contacted about his availability and the right offer could see him leave. Whether the Red Devils are ready to bid the reported £50m it would take to secure his signature. 7. Ilkay Gundogan (Borussia Dortmund) – Click right to find out all the latest Manchester United transfer news… – Jurgen Klopps imminent departure from the Westfalenstadion means several star players are likely to be considering their future. German midfielder Gundogan is one such player and, with his contract ending at the end of next season, it is being reported any significant bid for his services could land him. 7 7 5. Sami Khedira (Real Madrid) – To find out which £20m star could join Man United in the summer, click right… – The German World Cup winner is set to leave the Bernabeu on a free transfer at the end of the campaign but it appears Man United could lose out in their bid to land him. Borussia Dortmund, who are likely to be rebuilding a squad which seems set to be dismantled, are now heading the chase and are reportedly offering him an £8m-a-year deal. 7 A 1-0 defeat to Chelsea at the weekend has all but ended Manchester United’s faint hopes of winning the Premier League title.The foundations Louis van Gaal has built this season, though, means with a few key signings we could see the Red Devils mount a serious challenge for the crown.But who are the players likely to be heading to Old Trafford this summer to bolster the Dutchman’s squad?talkSPORT takes a look at all the latest rumours.Click the right arrows to find out more… 4. Nathaniel Clyne (Southampton) – Click right to see who Manchester United could pay £50m to sign… – A long-term target for the Red Devils, Clyne could be set to join up with former Saints team-mate Luke Shaw again in the summer. The Daily Mail has reported he is stalling over a new deal and this could play into Man Uniteds hands as the player closes in on the final year of his contract. 7 7 1. Memphis Depay (PSV Eindhoven) – The Dutch starlet is undoubtedly one of the hottest prospects in European football and it appears Manchester United are set to pip the other elite clubs to his signature. Dutch magazine Voetball International has claimed a £25m deal is done and dusted. 7 7 6. Carlos Bacca (Sevilla) – Click right to find out which World Cup winner could snub Louis van Gaal – With Radamel Falcao set to be sent packing back to Monaco, its perhaps a little surprising to hear Louis van Gaal is chasing another Colombian striker in Carlos Bacca. The 28-year-old has hit 21 goals this season across all competitions and could be a cheaper alternative to the likes of Edinson Cavani.