Scott Hogan has completed his move to Aston Villa from Brentford in a deal which could be worth up to £12million.
The striker has signed a four-and-a-half-year deal with Steve Bruce's side.
Hogan has scored 14 times in the league this term and West Ham were keen to sign him but boss Slaven Bilic pulled out of a move as he felt he had other striking options.
The 24-year-old told the club's official site: "I'm delighted to be at a club like Aston Villa.
"With its history and tradition I can't wait to start working hard and helping the team.