Spanish reports claim that Napoli full-back Juan Camilo Zuniga will join Barcelona this summer, activating a clause in his contract that allows him to move for less than valued. The Colombian defender has struggled for fitness this season but it has not stopped a number of clubs from showing interest, with the likes of Arsenal and Barcelona linked. And, it is being heavily reported by Catalan daily Mundo Deportivo that the latter will make a summer move as the future of Dani Alves and Martin Montoya remains uncertain. Whilst, Zuniga is valued at 30m and has a clause in his contract that could see him leave for that amount should a team bid, it is understood that another clause allows him to join the La Liga giants for half that amount. The report goes on to say that Barca could send Cameroon midfielder Alexandre Song to Napoli in a potential swap deal, whilst Javier Mascherano is also mentioned but it is expected he will remain at the Camp Nou.