Roving eye on Amy's unearned income (4,5)
I believe the answer is:
easy money
'unearned income' is the definition.
'easy money' can be an answer for 'income' (easy money is a kind of income). I am not sure about the 'unearned' bit.
'roving eye on amy's' is the wordplay.
'roving' indicates anagramming the letters.
'eye'+'on'+'amys'='eyeonamys'
'eyeonamys' is an anagram of 'EASY MONEY'.
Can you help me to learn more?
(Other definitions for easy money that I've seen before include "Effortlessly-obtained cash" , "Good pay for little work" , "return without difficulty" , "Quick buck" , "effortless gain" .)