In 2008, Swann started his professional career with the Italian team Andrea Costa Imola. On March 4, 2009, Swann signed a two-year deal with the Israeli team Hapoel Gilboa Galil. In his second season with the team, Swann won the 2010 Israeli League Championship with Gilboa Galil, alongside Jeremy Pargo, Brian Randle and Dion Dowell. On November 1, 2010, Swann was selected by the Rio Grande Valley Vipers in the sixth round of the 2010 NBA D-League Draft. One month later, Swann returned to Israel to sign with Maccabi Rishon LeZion for the remainder of the season. On July 4, 2011, Swann signed with the German team ratiopharm Ulm for the 2011–12 season. That year, Swann earned a spot in the All-BBL First Team and led Ulm to the 2012 BBL Finals, where they eventually were defeated by Brose Bamberg. On June 30, 2012, Swann signed with the Turkish team Gaziantep Basketbol for the 2012–13 season. On August 6, 2013, Swann returned to Germany and signed with Phantoms Braunschweig for the 2013–14 season. Swann participated in the BBL All-Star Game and was named the All-Star MVP. Swann finished the season as the league second-leading scorer with 17.9 points per game. On August 22, 2014, Swann signed with the Turkish team İstanbul BB for the 2014–15 season. However, On October 22, 2014, Swann parted ways with İstanbul BB and returned to Israel for a second stint, signing with Maccabi Rishon LeZion. On March 3, 2015, Swann participated in the 2015 Israeli All-Star game. On August 1, 2015, Swann signed with Maccabi Ashdod for the 2015–16 season. On November 2, 2015, Swann recorded a season-high 34 points, shooting 9-of-17 from 3-point range, along with four rebounds and nine assists in a 93–82 win over Hapoel Eilat. On March 25, 2016, Swann participated in the 2016 Israeli League All-Star game and won the Three-Point Shootout contest during the same event. On June 28, 2016, Swann signed with the French team Cholet Basket for the 2016–17 season. However, On February 17, 2017, Swann parted ways with Cholet and signed with the Venezuelan team Marinos for the remainder of the season. On May 18, 2017, Swann recorded a career-high 47 points, shooting 15-of-19 from 3-point range, along with five assists and four steals in a 120–59 blowout win over Gaiteros del Zulia. On August 4, 2017, Swann signed with the Argentinian team Comunicaciones Mercedes for the 2017–18 season. However, on January 10, 2018, he parted ways with Mercedes to sign with the Italian team Universo Treviso for the rest of the season. On August 29, 2018, Swann signed a one-year deal with Kleb Basket Ferrara, On December 2, 2018, Swann recorded a season-high 44 points, shooting 9-of-13 from three-point range, along with 10 assists, eight rebounds and four steals in a 90-78 win over Pallacanestro Mantovana. Swann went on to average a career-high 22.4 points, to go with 5.1 rebounds and 4.2 assists per game. On August 3, 2019, Swann signed with Juvecaserta for the 2019–20 season.
