Trader's quiet with little time to keep in touch (10)
I believe the answer is:
Here is my best explanation:
'trader's' is the definition.
'quiet with little time to keep in touch' is the wordplay.
'quiet' becomes 'sh'.
'with' means one lot of letters go next to another.
'little time' becomes 'mo' (I've seen this in other clues).
'to keep in' is an insertion indicator.
'touch' becomes 'finger' (fingering is a kind of touching**).
'shmo' going within 'finger' is 'FISHMONGER'.
(Other definitions for fishmonger that I've seen before include "Shopkeeper", "Seller of salmon, cod, etc" and "Shop".)