Portugal's Nani in action with Wales' James Chester
Villa have signed Chester from West Bromwich Albion on a four-year contract, as announced on the Championship club’s official website.
The 27-year-old former Hull City central defender has become the fifth signing of the summer transfer window for the Villans.
Wales' James Chester in action with Belgium's Eden Hazard
The former Manchester United prospect follows Tommy Elphick, Pierluigi Gollini, Aaron Tshibola and Ross McCormack to Villa Park.
Former Wales international striker Roberts has backed Chester to be a success at Villa.
Wales' James Chester in action with Northern Ireland's Stuart Dallas
Villa have made a very good signing in James Chester,he's been outstanding for @FAWales— Iwan Roberts (@iwanwroberts) 12 August 2016
Aston Villa FC (@AVFCOfficial) 12 August 2016
Chester was part of the Wales squad that reached the semi-finals of the 2016 European Championship in France in the summer.
The central defender featured in six matches for Wales at Euro 2016, creating one chance in the process.
The 27-year-old had a pass accuracy of 88%, and won 15 headers, six dribbles and 15 tackles, according to Squawka.com.