Fine strike that’s spotted in football field (7,3)
I believe the answer is:
penalty box
'spotted in football field' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'fine strike' is the wordplay.
'fine' becomes 'penalty' (I've seen this before**).
'strike' becomes 'box'.
'penalty'+'box'='PENALTY BOX'
'that's' is the link.
(Other definitions for penalty box that I've seen before include "area spotted?" , "Spot container" .)