Fernando Manuel Fernandes da Costa Santos (born 10 October 1954) is a Portuguese professional football manager and former player who played as a defender. He is the manager of the Poland national team. He amassed Primeira Liga totals of 161 games and two goals over eight seasons, almost always with Estoril. After retiring, he worked as a coach for several decades, starting out at his main club in 1988. Santos managed Portugal's Big Three, winning five major titles with Porto. For the better part of the 2000s he worked in Greece, mainly with AEK Athens and PAOK. In 2010, he was appointed at the helm of the Greece national team, coaching them in a World Cup and one European Championship. Subsequently, he led Portugal to victory in the Euro 2016 and the 2019 Nations League, which were the first two major titles in the nation's history, before leaving in 2022. The following year, he took over as manager of Poland. Playing career Born in Lisbon, Santos finished his development with Benfica, having joined its youth system at the age of 16. His senior debut was made with Estoril, which he went on to represent in all three major levels of Portuguese football. Santos made his Primeira Liga debut on 7 September 1975, playing the full 90 minutes in a 2–0 home win against Farense. He finished his first season with a further 12 appearances, helping his team to the eighth position. Santos scored his first goals in the top division in the 1978–79 campaign, only missing one league game in an eventual 11th-place finish. For 1979–80, he moved to Marítimo, where he was also first choice. Having returned to his previous club, he played with them a further eight years (five being spent in the Segunda Liga) before retiring at the age of 33. Coaching career Estoril and Porto Santos started working as a manager immediately after retiring. He helped Estoril return to the top tier in 1991 and, in the following ten years, only worked in that competition, being in charge of Estrela da Amadora and Porto. Having signed for the latter side in summer 1998, Santos won the national championship and the Portuguese Supercup in his first season. He finished second in the following to Sporting CP, and led the team to the quarter-finals of the UEFA Champions League. Greece and Sporting CP In 2001, Santos was appointed