West Ham United have completed the signing of Brescia striker Savio on a four-and-a-half-year deal.
The 19-year-old has moved to England for an undisclosed fee, but it is understood to be a club record transfer in the region of £9million.
West Ham director of football Gianluca Nani revealed on Monday that Savio was expected to move as the Hammers looked for a replacement for Craig Bellamy.
The Wales captain joined Manchester City last week and Nani, who worked with Savio at Brescia, has now landed an ideal alternative.
Savio began his career with 1860 Munich, before he was snapped up by Brescia as a 16-year-old, and he has also represented Germany at youth level.
Subject to international clearance, Savio will make his debut in the Premier League clash against Hull City at Upton Park on Wednesday night.