The 27-year-old Karlernäs, who has scored 25 goals in the last three seasons, has signed a contract that is valid for the rest of the season for Sevilla - which is currently tenth in the 18-team league.
- It feels really fun, I am expectant, says Karlernäs to Värmlands Folkblad.
Midfielder Karlernäs has made five A-international appearances, most recently in the Algarve Cup in March.