Let the network get into the red (6)
I believe the answer is:
rented
'let' is the definition.
(I've seen this in another clue)
'network get into the red' is the wordplay.
'network' becomes 'ent' (I can't justify this - if you can you should give a lot more credence to this answer).
'get into' is an insertion indicator.
'ent' placed inside 'red' is 'RENTED'.
'the' acts as a link.
Can you help me to learn more?
(Other definitions for rented that I've seen before include "Taken for hire" , "Leased" , "Let for money" , "Hired - tender (anag)" .)