Aston Villa signed Matty Cash from Nottingham Forest on a five-year deal. The transfer fee is reported to be 16m pounds.
The highly-rated attacker moved to Villa Park from Sheffield United for a record fee of 28m pounds.
Villans signed Emiliano Martinez on a four-year deal from Arsenal. The Argentine has cost around 20m pounds.
Aston Villa added Bertrand Traore to their ranks from Lyon for a reported fee of 17m pounds.
Barkley has moved to Villa on a season-long loan from Chelsea. The English midfielder scored his first goal for Villans against Liverpool.
Ross McCormack signed for Aldershot Town after being released from Villa.
The 22-year-old has signed for Coventry City on a permanent deal after spending the last season on loan with them.
Birch has been released from Villa after spending nearly a decade at the club.
Anton Hooper is another reserves player Villa have parted ways with.
Colin Odutayo has been relieved of the duties by Villa. Odutayo spent the last season with the reserves team.
Villa have released the 19-year-old, who served the reserves team for around two years.
The young goalkeeper is currently a free agent after being released by Aston Villa.
Wolves captured the Montenegro goalkeeper Matija Sarkic from Villa on a free transfer. Wolves have sent the 23-year-old to Shrewsbury Town on loan.
The 31-year-old has signed for Stoke City as a free agent.
The young American has been loaned to Football League Two club Burton until the end of the season
The Tanzanian international joined the Turkish club Fenerbahce for an undisclosed fee.
Cameron Archer moved to National League club Solihull Moors on a season-long loan.