Do a turn as 'Oliver' (5)
I believe the answer is:
twist
I believe this clue is a triple definition!
'do' is the first definition.
(I've seen this before)
'a turn' is the second definition.
('twist' can be a synonym of 'turn')
'as' acts as a link.
'oliver' is the third definition.
(as in Oliver Twist)
(Other definitions for twist that I've seen before include "Request for another card" , "Deal card face upwards" , "See 16" , "Wind about; sixties dance" , "Twirl" .)