4. Dries Mertens (Napoli)
Napoli’s Dries Mertens is one of the in-form players in world football right now. With 35 league goals in his last 33 matches, Europe’s top clubs have all taken an interest. He has a £25million release clause in his contract, meaning that someone is most likely going to get a bargain if he opts to leave the San Paolo. Arsenal have shown interest, and the 30 year-old would be the perfect replacement for Alexis Sanchez in the wide forward role. Belgian press reported earlier in the year that Mertens ‘dreams of a move to the Premier League’-