The top three slots are reserved for players who are guaranteed to make a big impact on virtually any team in world football from the moment you sign them. Faouzi Ghoulam is the first. The Napoli man is valued at £10m so be prepared to spend, but he's worth it. Every player on this list is solid. They're all reliable with the potential to develop into something spectacular; Ghoulam is already there. He's quick and physical, composed and hard-working, attacking and defensive. He's not a total secret, but he's a left-back worthy of basically any starting XI.