One side with money abroad (4)
I believe the answer is:
rand
'money abroad' is the definition.
(currency of South Africa)
'one side with' is the wordplay.
'one side' becomes 'r' (abbreviation for right**).
'with' becomes 'and' (I've seen this before).
'r'+'and'='RAND'
(Other definitions for rand that I've seen before include "South African currency unit" , "South African money" , "Foreign currency" , "our 1/4 Across [GOLD MEDALLIST] in 1964" , "Overseas money" .)