Mention turnover of local housing syndicate (5,2)
I believe the answer is:
bring up
'mention' is the definition.
(bringing up is a kind of mentioning)
'turnover of local housing syndicate' is the wordplay.
'turnover of' says the letters should be written backwards (I've seen 'turnover' mean this (the letters turn over)).
'local' becomes 'pub' (one's local pub).
'housing' means one lot of letters goes inside another.
'syndicate' becomes 'ring' (I've seen this in other clues).
'pub' in reverse letter order is 'bup'.
'bup' enclosing 'ring' is 'BRING UP'.
(Other definitions for bring up that I've seen before include "Raise the issue (in two ways!)" , "Rear, or raise for discussion" , "Lively Baroque dance" , "Raise (topic)" , "Rear like child, or mention for discussion" .)