Footballer with eccentric tightener (4,3)
I believe the answer is:
wing nut
'tightener' is the definition.
Both the answer and definition are singular nouns.
Perhaps they are linked in a way I don't understand?
'footballer with eccentric' is the wordplay.
'footballer' becomes 'wing' (I've seen this in other clues).
'with' means one lot of letters go next to another.
'eccentric' becomes 'nut' (nut is a kind of eccentric).
'wing'+'nut'='WING NUT'
Can you help me to learn more?
(Other definitions for wing nut that I've seen before include "One readily turns" , "Item with two flaps and a thread, tightened by hand" , "It turns easily" , "Screw fastener for easy turning" , "offering some security?" .)