Thrifty goalkeeper? (5)

I believe the answer is:
saver
'thrifty goalkeeper?' is the definition.
The definition and answer can be both people as well as being singular nouns.
Perhaps you can see an association between them that I can't see?
This is the entire clue.
Can you help me to learn more?
(Other definitions for saver that I've seen before include "Cheap fare" , "Investor" , "Reduced travel fare" , "Raves (anag.)" , "Cheap ticket" .)