4. Mamadou Sakho, France
The Frenchman may not have showered himself in glory on Merseyside following his £18m switch from Paris Saint-Germain last summer, but national team manager Didier Deschamps is a big fan.
Deschamps preferred Sakho in the starting XI ahead of Arsenal’s Laurent Koscielny and Eliaquim Mangala of FC Porto and the 23-year-old could well develop into a top-class defender if he can banish his erratic behaviour.