Easy catch for model (6)
I believe the answer is:
sitter
This clue is a double definition.
'easy catch' is the first definition.
'model' is the second definition.
(I've seen this before)
'for' is the link.
(Other definitions for sitter that I've seen before include "Artist's model or child's minder" , "one rarely missed?" , "Easy shot or catch" , "Child-minder of sedentary disposition" , "one can't stand?" .)