Boy gets confused -- last requirement for actor or performer (8)
I believe the answer is:
songster
'performer' is the definition.
(songster is a kind of performer)
'boy gets confused last requirement for actor' is the wordplay.
'boy' becomes 'son' (synonyms).
'confused' indicates anagramming the letters.
'last requirement for' says to take the final letters.
The final letter of 'actor' is 'r'.
'gets' with letters rearranged gives 'gste'.
'son'+'gste'+'r'='SONGSTER'
'or' is the link.
(Other definitions for songster that I've seen before include "crooner?" , "'e's strong (anag.)" , "Berlin, for example" , "vocalist" , "Singer" .)