A great desire to make money (3)
I believe the answer is:
yen
This clue is a double definition.
'a great desire' is the first definition.
(I've seen this in another clue)
'money' is the second definition.
(Japanese currency)
'to make' acts as a link.
(Other definitions for yen that I've seen before include "Intense longing" , "Longing, hankering after" , "Longing (colloq.)" , "Japanese currency; yearning" , "Long for Japanese money?" .)