Golfer McIlroy (4)
I believe the answer is:
rory
'golfer mcilroy' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for rory that I've seen before include "Gaelic man?" , "Form of Gaelic name Ruairidh, rhymes with Conservative" , "Irishman" , "Male" , "Fellow" .)