Former Barcelona ace Marcos Alonso Pena has tragically passed away aged 63.FC Barcelona issued an official statement stating, "With great sadness and sorrow, we have received the news of the death of Marcos Alonso Peña, former Barcelona player (1982-1987) and the father of our current player, Marcos Alonso." Spanish media reported the winger - the father of Chelsea legend Marcos Alonso - passed away following a "long illness." For its part, Real Madrid mourned the late player, saying, "Real Madrid, its president and board of directors deeply regret the death of Marcos Alonso Peña, a historic Spanish footballer and coach, the son of our legend Marquitos and the father of Marcos Alonso, the current FC Barcelona player."