Head of sales rushed in shop (5)
I believe the answer is:
store
'shop' is the definition.
(I know that shop can be written as store)
'head of sales rushed' is the wordplay.
'head of' suggests taking the first letters.
'rushed' becomes 'tore' (to tear around is to rush or run fast).
The initial letter of 'sales' is 's'.
's'+'tore'='STORE'
'in' is the link.
(Other definitions for store that I've seen before include "Large shop; computer memory" , "Depository for goods" , "Stock or supply, or warehouse for them" , "Reserve, shop" , "Put away for future use" .)