2) Mats Hummels (Borussia Dortmund)
The World Cup winning defender has been linked with a whole host of European giants over the past 12 months, with the Daily Mirror tipping Arsenal as the favourites back in November. The Mirror reports that the German is valued at £30m, and admit that Manchester United are also heavily interested in the player. Wenger has reportedly asked to be kept informed of developments regarding the player’s future.