City not entirely awash with money, receiving coin from oddball (9)
I believe the answer is:
eccentric
'oddball' is the definition.
('eccentric' can be a synonym of 'oddball')
'city not entirely awash with money' is the wordplay.
'city' becomes 'ec' (the City of London postcode).
'not entirely' means to remove the last letter.
'awash' becomes 'centric' (I am not sure about this - if you are sure you should believe this answer much more).
'with' means one lot of letters go next to another.
'money' becomes 'c'.
'ec' with its final letter taken away is 'e'.
'centric' after 'c' is 'ccentric'.
'e'+'ccentric'='ECCENTRIC'
'receiving coin from' acts as a link.
I am not very happy about this link. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for eccentric that I've seen before include "Unconventionanl or unusual" , "not precisely circular" , "Odd person is off-centre" , "Unconventional type" , "Weird" .)