Simeon Nenchev Slavchev (; born 25 September 1993) is a Bulgarian professional footballer who plays as a defensive midfielder for Wieczysta Kraków. Slavchev began his professional career at Litex Lovech in 2010. After loan spell at Chavdar Etropole he became a regular in their team. In 2014, he signed for Sporting CP, but failed to break into the first team. After a loan spells with Bolton Wanderers, Apollon Limassol and Lechia Gdańsk, he signed for Qarabağ in 2018. Career Early career Slavchev started his career at home-town club Septemvri Sofia, joining their youth system as a six-year-old. In the 2006–07 season, he became a goalscorer for their youth team. In 2007, Slavchev joined Slavia Sofia and was part of the side that won the Bulgarian U-15 Championship in the 2007–08 season. Litex Lovech Slavchev joined the Litex's first team in October 2010. He made his debut during the 2010–11 season, on 31 October 2010 in a 2–0 home win over Slavia Sofia, coming on as a substitute for Hristo Yanev. In July 2011, Slavchev joined Chavdar Etropole on a season-long loan deal. In the 2011–12 season, he earned 13 appearances in the B PFG(second division of Bulgarian football). In the summer of 2012, he returned to Litex. On 4 November 2012, in the league match against Cherno More, he marked his first goal in the A PFG in a 4–1 victory. Sporting CP On 19 May 2014, Slavchev signed with Portuguese side Sporting CP on a five-year deal, for a reported fee of 2,5 million euro. Loans to Bolton, Apollon and Lechia On 2 February 2015 Slavchev joined Bolton Wanderers until the end of the season. He made his debut for the team in the English Championship on 7 February 2015 in a match against Derby County. It was his only match for Bolton after Slavchev got injured and was ruled out until the end of the season. On 11 August 2015, Slavchev joined the Cypriot team Apollon Limassol on loan for the 2015–16 season. He made his debut on 23 August 2015, scoring the winning goal after added time. On 19 May 2016 Apollon won the Cypriot Cup. Slavchev had an injury at the end of the 2015–16 season. Sporting decided to loan him out in order for him to gain more experience and to reach full fitness. On 17 August 2016, Slavchev joined Polish club Lechia Gdańsk, on