Refuse roubles Onegin brought to the west (7)
I believe the answer is:
renegue
'refuse' is the definition.
(I've seen this before)
'roubles onegin brought to the west' is the wordplay.
'roubles' becomes 'R'.
'onegin' becomes 'Eugene' (novelist Eugene Onegin).
'brought to the west' says the letters should be written backwards (letters written right to left or \'east to west\').
'eugene' written backwards gives 'enegue'.
'r'+'enegue'='RENEGUE'
(Other definitions for renegue that I've seen before include "Break a promise" , "Abandon" , "Go back on (a promise)" , "Fail to fulfil an obligation" , "Go back on one's word" .)