Downing has been at Middlesbrough since his schooldays
Aston Villa have signed England winger Stewart Downing for £12 million on a four-year deal from Middlesbrough.
The 24-year-old agreed personal terms and passed a medical at Villa Park on Thursday and becomes manager Martin O'Neill's first signing of the summer.
Downing told the Villa website: "I wanted to come as soon as I met Martin so I'm delighted it's now sorted out.
"As an outsider looking in, it was obvious Villa are a club on the up. I want to be part of that."
Downing made 181 League appearances for home-town club Middlesbrough after making his debut in 2002.
He injured his foot, ironically against Villa, in the last game of the season and following surgery is likely to be out of action until October at the earliest.
His future at Boro had been the subject of much speculation since the club's relegation to the Championship in May.
Downing signed a new five-year deal at the Riverside Stadium in February 2008 and although he had a written transfer request rejected in January chairman Steve Gibson said he would not stand in the way of a move if the club went down.
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