They’re wise to use some imagination (4)
I believe the answer is:
magi
'they're wise' is the definition.
The definition suggests an adverb but the answer is not.
'some imagination' is the wordplay.
'some' indicates the answer is hidden within the clue (some of the parts of the word are used).
'MAGI' is hidden within 'imagination'.
'to use' acts as a link.
Can you help me to learn more?
(Other definitions for magi that I've seen before include "The Three Kings" , "Christmas travellers" , "Three Wise Men of the Bible" , "Nativity story wise men" , "Persian wise men" .)