Henrique Sereno Fonseca (born 18 May 1985), known as Sereno, is a Portuguese former professional footballer who played as a central defender. Club career Guimarães Born in Elvas, Alto Alentejo, Sereno joined Vitória de Guimarães for 2005–06 from hometown's O Elvas CAD, and served a loan stint during the latter part of that season at lowly F.C. Famalicão. In the 2007–08 campaign he, alongside Brazilian Pedro Geromel, formed a solid defensive partnership as Vitória came from the second division into a final third Primeira Liga position. On 9 March 2008 he scored a rare goal, in a 2–0 home win against Sporting CP. Sereno spent the vast majority of 2008–09 in the sidelines after having undergone surgery to both knees, only appearing in six games. After beginning the following season again in the starting XI (nine matches, one goal), he eventually terminated his contract and, on 1 February 2010, signed with Real Valladolid in Spain for five months. Sereno made his debut for his new team on 20 March 2010, playing the entire 2–0 away victory over Deportivo de La Coruña. Porto In late June 2010, after Valladolid's relegation in La Liga, Sereno returned to his country, signing with FC Porto on a free transfer. On 20 August 2011, deemed surplus to requirements as practically all Portuguese players, he joined German club 1. FC Köln on a season-long loan deal. Sereno made his Bundesliga debut on 27 August 2011, playing the full 90 minutes in a 4–3 away defeat of Hamburger SV. He featured regularly during the campaign, but his team suffered relegation. Sereno returned to Valladolid and Spain's top flight for 2012–13, still under contract with Porto. He scored his only goal for the former on 24 February 2013, in the 2–1 away win against Rayo Vallecano. Later years In summer 2013, Sereno joined Kayserispor from Turkey. He made his Süper Lig debut on 15 September, featuring the full 90 minutes in a 1–1 draw at Gençlerbirliği SK. He ended the season with 22 matches and three goals, in an eventual relegation as last. On 27 July 2015, free agent Sereno returned to Germany by penning a two-year deal with 1. FSV Mainz 05. The following 15 June, however, after no competitive appearances, he was released. Sereno scored his first goal for his next club, Atlético Kolkata, on 18 December 2016. It proved to be the equaliser as they