Runs into singer making money (5)
I believe the answer is:
brass
'money' is the definition.
(I've seen this before)
'runs into singer' is the wordplay.
'runs' becomes 'r' (cricket abbreviation).
'into' is an insertion indicator.
'singer' becomes 'bass' (bass is a kind of singer**).
'r' put within 'bass' is 'BRASS'.
'making' acts as a link.
(Other definitions for brass that I've seen before include "Baggage" , "cash" , "Boldness" , "Money - cheek!" , "An alloy; part of orchestra" .)