Sunderland have confirmed the signing of winger David Moberg Karlsson from Gothenburg on a four-year contract for an undisclosed fee.
The 19-year-old began his career with IFK Mariestad before joining Gothenburg in 2010, making his senior debut for them as a 17-year-old.
Moberg Karlsson, who can also operate in attack, played 28 times for them in total, including 10 in the current season but will now boost Paolo Dio Canio's attacking options on Wearside.
He played alongside former Sunderland player Tobias Hysen at Gothenburg and won the Swedish Cup last month, coming on as a substitute against Djurgardens in the final.
Moberg Karlsson is also a Sweden U19 international and played for them against their French counterparts last month.