Mexico defender Diego Reyes has signed a five-year contract with Porto and will move to the Estadio do Dragao for an undisclosed fee in the summer. The 20-year-old won a gold medal at the Men\'s Olympic Football Tournament London 2012, and will move to Portugal from Mexico City outfit America at the end of the season. A statement on Porto\'s official website read: \"Diego Reyes, 20, will be a Porto player. The young Mexican has signed a contract until 2018 and will join the Dragons for the start of next season. \"Reyes is one of the most promising centre-backs in the world, despite his youth. In the summer he became an Olympic champion with Mexico and attracted the interest of several leading European clubs.\" From : Fifa