3. Eliaquim Mangala – Porto
Mangala has been the subject of some heavy speculation this term as a number of top European clubs have been making frequent trips to the Portugal’s second city to keep an eye on him. Premier League rivals Manchester United City have already been linked, and the latter had already come close to landing him on transfer deadline day in January. However, he stayed put and now Chelsea still have a few months to decide if they want to make their move again. He is a raw talent, but his performances against Spurs in the recent Europa League tie served to show that he is still very much a work in progress.