No mice involved in salary (6)
I believe the answer is:
income
'salary' is the definition.
(thesaurus)
'no mice involved' is the wordplay.
'involved' indicates anagramming the letters (involved can mean confusing or complex).
'no'+'mice'='nomice'
'nomice' is an anagram of 'INCOME'.
'in' acts as a link.
(Other definitions for income that I've seen before include "Earned or unearned revenue." , "Money received for work or from investment" , "Money received on which tax is payable" , "Money coming in" , "Coin me! (anag)" .)