Striker Facundo Ferreyra has joined Shakhtar Donetsk on a five-year deal worth $9million.
The 22-year-old made the switch from Argentine Primera Division champions Velez Sarsfield on Tuesday night, marking his first foray into European football.
"I am very happy," he told the club's official website.
"I was flattered by the interest expressed by Shakhtar and I will try to fully compensate for the trust with my performance on the pitch and with good goals. You can expect a lot of goals from me."
The young forward scored 31 goals in 78 league games in Argentina's top flight for Velez and previous club Banfield, and he has insisted that the transition will not prove too testing.
He added: "My previous team, Veles, used the same formation as Shakhtar do. We also had four defenders, two holding midfielders, three attackers and a forward on the offensive end.
"So, I think, it won’t be difficult for me to adapt to Shakhtar’s system – I operated in a similar way lately."
Shakhtar start their Ukrainian Premier League title defence at home against Hoverla on Sunday.