Current pair involved in deal unlikely to invest (7)
I believe the answer is:
install
'to invest' is the definition.
(I've seen this before)
'current pair' is the wordplay.
'current' becomes 'in' (I've seen this in other clues).
'pair' becomes 'stall' (I am not sure about this - if you are sure you should believe this answer much more).
'in'+'stall'='INSTALL'
'involved in deal unlikely' is the link.
This may not be correct. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for install that I've seen before include "Place in position, establish" , "Fix in position ready for use" , "Place (something) in its working position" , "Load up" , "Put in place ready for use" .)