Defender who'll retreat? (4)
I believe the answer is:
back
This could be a double definition.
'defender' is the first definition.
(I've seen this before)
'who'll retreat?' is the second definition.
'back' can be an answer for 'retreat?' (thesaurus). I am not sure about the 'who'll' bit.
Can you help me to learn more?
(Other definitions for back that I've seen before include "defensive player" , "Support; in return" , "Give support to; player" , "Support; footballer" , "Rear surface of the body" .)