#3 Inigo Martinez
Agreed he's been missing for a while thanks to a muscle injury, but Real Sociedad's Inigo Martinez is an exceptional defender only sidelined because of two of Spain's most successful defenders in Sergio Ramos and Gerard Pique.
Martinez, though, is only 25 and has a bright future ahead. He's commanding in the box, quick to read the game and is a threat in the air should his team require it. A Sociedad man through-and-through, Martinez is expected to be a part of the next partnership at the centre of Spain's defence in the years to come.
Manchester United are supposedly interested in signing Martinez but should they act on this interest, he'll cost them around €30 million or so – a steal – given the kind of potential he oozes.