Martin Tony Waikwa Olsson (born 17 May 1988) is a Swedish professional footballer who plays as a left back for Malmö FF and the Sweden national team. Olsson signed for Blackburn Rovers from Högaborgs BK in January 2006. In 2013, Premier League side Norwich City signed him for an undisclosed fee. In January 2017, he left Norwich to join Swansea until 2019. In 2020, he signed with Allsvenskan club Helsingborgs IF in his native Sweden before moving on to represent both BK Häcken and Malmö FF. A full international since 2010, Olsson has won more than 50 caps for the Sweden national team and has represented his country at UEFA Euro 2012 and 2016 as well as the 2018 FIFA World Cup. Club career Blackburn Rovers Olsson began his playing career in Sweden by playing for Högaborgs BK, where former national star Henrik Larsson began his career. Olsson was working his way through the youth setup at the club in 2005–06. His talent attracted the attention of football clubs in Europe and in January 2006 Premier League club Blackburn Rovers signed him for their youth academy. He made his Blackburn debut in the UEFA Cup qualifier in the 2007–08 season as a late substitution for Stephen Warnock. He made his Premier League debut against Derby County in a 2–1 victory on 30 December 2007, coming on as an 84th-minute substitute for Morten Gamst Pedersen at Pride Park, in front of a crowd of 30,048 spectators and the referee was Peter Walton. He was voted Blackburn's Young Player of the Year for the season 2007–08. In May 2008, Olsson signed a new four-year contract, keeping him at Blackburn until June 2012. On 24 September 2008, Olsson scored his first Blackburn goal, scoring the winning goal in a League Cup tie against Everton. The goal turned out to be the only goal of the match. On 20 January 2010, he scored a spectacular overhead kick in a 6–4 League Cup semi-final defeat against Aston Villa in the 63rd minute at Villa Park. On 23 November 2009, Olsson was sent off for two yellow card offences on Tottenham Hotspur winger Aaron Lennon. He scored his first Premier League goal on 10 February against Hull City at Ewood Park in a 1–0 victory. Olsson made his 25th league appearance at home to Birmingham City on 24 March 2010 in a 2–1 win. On 28