What separates an overrated, underrated and those who get just amount of praise they deserve? A fine line, hard to determine. The most underrated players in Europe? Those who probably don’t get enough continental recognition, and the appreciation for them usually resides within their club’s fan base, like Joao Pereira, Diego Costa, Mathieu Valbuena, Gokhan Inler, Burak Yilmaz and Borja Valero.