What Nigel Mansell has, can put you in the shade (3)
I believe the answer is:
elm
'put you in the shade' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how they can define each other.
'what nigel mansell has' is the wordplay.
'has' indicates the answer is hidden within the clue.
'ELM' can be found hidden inside 'what nigel mansell'.
'can' is the link.
Can you help me to learn more?
(Other definitions for elm that I've seen before include "Furniture wood" , "Tree with a Dutch disease" , "Strange tree for Mel" , "wooden" , "Gray's rugged tree (Elegy)" .)