Calum Chambers has signed for Villa on a three-and-a half-year contract.
He joined on a free transfer after being out of contract at the end of the season.
He is the third January signing for Villa, following the arrivals of Philippe Coutinho on loan from Barcelona and Lucas Digne.
Chambers said that the club is in a great moment.
Everyone can see that it is an exciting place to be. It is moving in the right direction.
It was a no-brainer for me to join a great club. It was the right thing for me to do.
Chambers joined them fromSouthampton in the summer of 2014).
Tuanzebe's loan from Manchester United ended earlier this month and he joined Italian side Napoli.
The manager of the Villa has been linked with the signing of a player from the Bianconeri.
Chambers said that the manager did well at Rangers. He is a young, exciting manager and I am excited to work with him.
On our dedicated page, you can find all the latest football transfers.