Napoli are tracking Aaron Martin, according to various Italian media outlets. The Espanyol full-back is likely to be sold this summer. The Italian side already negotiated with Pau Lopez over his signing but in the end did not agree a deal.
Tuttosport and Calcio News, among others, say that Napoli have followed Aaron for some time at both Espanyol and with the Spain U21 team.
Aaron is one of the most interesting young players in Spain and has done well in the top flight.