Quick to use old journalists (7)
I believe the answer is:
express
'quick' is the definition.
(I've seen this before)
'old journalists' is the wordplay.
'old' becomes 'ex' (prefix meaning former or onetime).
'journalists' becomes 'press' (I've seen this before).
'ex'+'press'='EXPRESS'
'to use' is the link.
I am not very happy about this link. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for express that I've seen before include "Verbalise - train" , "Utter; without stopping" , "air" , "Specific; going at speed" , "Say; fast train" .)