Nuno has been named new coach of Valencia.
Nuno, 40, leaves Primeira Liga club Rio Ave to sign a one-year contract with Valencia and has the option to extend his deal into a further year, "based on sporting achievements".
A statement published on Valencia's official website read: "Valencia have reached an agreement to contract Nuno Espirito Santo as manager through to June 30, 2015."
Nuno's greatest achievement in an 18-year playing career came in May 2004 as he helped Jose Mourinho's Porto win the Champions League trophy at the expense of Monaco.
He also played for Spanish clubs Deportivo La Coruna and Osasuna and has attracted fresh attention from Spain after guiding Rio Ave into both domestic Portuguese cup finals in 2013-14.
