The defender completed a move from West Bromwich Albion last week.
West Brom manager Tony Pulis as James Chester prepares to take a throw in
The defender joined Roberto di Matteo’s side last week, becoming their fifth signing of the summer transfer window.
The move brought about an end to a short spell with West Bromwich Albion, who he only joined in last season’s summer transfer window.
Manchester United's Jesse Lingard in action with West Brom's James Chester
It was a highly frustrating year for him at the Hawthorns in which he found himself playing in an unfamiliar full back role under Tony Pulis.
And he says that Di Matteo confirming to him that he would be playing centre back regularly was the main reason behind his move.
“ I knew with how last season went my time was pretty much up before it began, which is a shame,” he told the Birmingham Mail.
“The reason I came here was to be in contention and be on the pitch more often than not. When the manager re-assured me that I would be playing centre-back it was music to my ears.”
West Brom's James Chester in action with Watford's Allan Nyom
Villa will now be hoping that Chester can form a partnership with Tommy Elphick in the heart of their defence.
Both players have experience of playing in the Championship, which may prove to be crucial to their hopes of success this season.
There is no denying that their arrivals are very much needed, with the Villa defence continuing to struggle so far this season after their disastrous performances over the last year.
Sunderland's Dame N'Doye in action with West Brom's James Chester