American football authority baffled about British making easy money (1,4,4)
I believe the answer is:
a fast buck
'easy money' is the definition.
(I've seen this before)
'american football authority baffled about british' is the wordplay.
'american football authority' becomes 'afa' (this might be a standard abbreviation I've not previously seen).
'baffled' becomes 'stuck' (I've seen this before).
'about' indicates putting letters inside.
'british' becomes 'b' (abbreviation e.g. in 'BBC').
'stuck' placed around 'b' is 'stbuck'.
'afa'+'stbuck'='A FAST BUCK'
'making' acts as a link.
Can you help me to learn more?
(Other definitions for a fast buck that I've seen before include "One wild young fellow" , "Does find it difficult to go along with this" , "Easy profit" , "The Deer Hunter might struggle to net?" , "killing?" .)