Career
Born in Helsingborg, Sweden, Carlsén started his career at hometown club Helsingborgs IF. Inter After being spotted by Internazionale (Inter) scouts during a 2007 youth tournament with Sweden"s national under-17 team, he was lent to Inter Milan in January 2008. and played for its Primavera team He established himself as a starter for the youth squad, but decided to move back to Sweden after five months. In the summer of 2009, he signed for Inter and went back to Italy on loan.
Since then, he has played "friendly" matches with the "senior" squad against Football Club Lugano, Piacenza and Football Club Vaduz, along with players without international duty and Primavera team-mate.
He has been selected for the senior squad on a few occasions, but never coming off the bench. During the 2010-2011 season, Carlsén was once the captain of the Primavera squad.
In April 2010 he signed a new contract lasting until 2012 Helsingborgs IF On 9 August 2011 it was made official that he would be on loan to his youth club Helsingborgs IF. He returned to Inter after the end of the Swedish 2011 season with only a few months left on his contract. Trelleborgs FF Carlsén’s contract with Inter was not renewed.
Hammarby IF coach Gregg Berhalter invited him to train with the club
He also played from start in a training game against Degerfors IF and scored after 3 minutes. In the end he joined Trelleborgs FF. In October 2010, he was for the first time selected for the Sweden national under-19 squad that faced Austria U21. Youth Inter Milan.