Give props to old Republican money lender (8)
I believe the answer is:
creditor
'money lender' is the definition.
'creditor' can be an answer for 'lender' (creditor is a kind of lender). I am not sure about the 'money' bit.
'give props to old republican' is the wordplay.
'give props' becomes 'credit' (I am not sure about this - if you are sure you should believe this answer much more).
'to old' becomes 'o' (common abbreviation eg in OE for Old English).
'republican' becomes 'r' (abbreviation).
'credit'+'o'+'r'='CREDITOR'
Can you help me to learn more?
(Other definitions for creditor that I've seen before include "The one to whom debt is due" , "Person to whom money isowed" , "one to whom money is due" , "Director (anag)" , "Lender" .)