Borussia Dortmund signed highly-rated Greece attacking midfielder Konstantinos Karetsas for a reported fee of €30 million ($34.6 million) from Belgian side Genk on Monday.

The 18-year-old Karetsas penned a five-year contract through June 2031, the Bundesliga club said.

“Despite all the talent he already brings, we see even more potential in him that we want to help him realize together,” Dortmund managing director for sport Lars Ricken said.

Karetsas was reportedly a target for many clubs after impressing at Genk last season. He set up 11 goals in 28 Jupiler Pro League appearances.

Kicker magazine reported Dortmund was paying Genk €30 million plus 2 million in realistically attainable bonus payments.