Bennett, whose Norwich City departure was confirmed earlier this month, could have admirers at Aston Villa.
Calderwood became Steve Bruce's assistant manager at Villa a fortnight ago.
The 51-year-old joined up with Steve Bruce at Aston Villa last month.
Calderwood left Aston Villa's Championship rivals Brighton to become Steve Bruce's assistant.
Colin Calderwood left Brighton & Hove Albion to join Aston Villa last week.
Brighton may still be pushing for automatic promotion but how will Chris Hughton fare without his right-hand man?
Chris Hughton has commented on Colin Calderwood's move to Aston Villa.
Aston Villa boss Jack Grealish has raved about Jack Grealish's display against Brighton.
The former Brighton & Hove Albion assistant manager looks set to join Aston Villa.
The Seagulls assistant resigned on Thursday, ahead of an expected switch to become Villa's number two.