Wealthy duke associated with circle in Yemen somehow (7)
I believe the answer is:
moneyed
'wealthy' is the definition.
('moneyed' can be a synonym of 'wealthy')
'duke associated with circle in yemen somehow' is the wordplay.
I cannot quite see how this works, but
'duke' could be 'd' and 'd' is found within the answer.
'circle' could be 'o' and 'o' is found in the answer.
an anagram of 'yemen' is 'mneye' which is present in the left over letters.
This accounts for all the letters.
This may be the basis of clue (or it may be nonsense).
(Other definitions for moneyed that I've seen before include "rolling in it" , "Well-off" , "Well-to-do" , "Affluent" , "Wealthy" .)