On August 6, 2016, Larsen signed his first contract with French side
Lille Métropole. In January 2017, he signed with
ProA side
Mitteldeutscher BC. With Mitteldeutscher, he won the championship and gained promotion to the
Basketball Bundesliga (BBL), the German first tier. For the 2017–18 season, he returned to his home country to sign with
Horsens IC. After the season, he was named the
Basketligaen MVP. He averaged 19.2 points, 7.2 rebounds and 3.2 assists per game. On August 7, 2018, Larsen signed with
RETAbet Bilbao Basket of the
LEB Oro. On July 12, 2019, Larsen signed with
Chocolates Trapa Palencia of the
LEB Oro. He averaged 14.2 points, 6.3 rebounds and 2.1 assists per game and was voted to Eurobasket.com All-Spanish LEB Gold 2nd Team. On July 15, 2020, Larsen signed with
Breogán. On December 27, 2021, he signed with
Movistar Estudiantes. ==References==