Crossword Genius

Leo, maybe journalist, definitely not up to be recruited (6,2)

Ross

I believe the answer is:

signed on

'be recruited' is the definition.

'leo maybe journalist definitely not up' is the wordplay.
'leo maybe' becomes 'sign' (star sign).
'journalist' becomes 'ed' (short for editor).
'definitely not' becomes 'no'.
'up' says the letters should be written backwards (in down clue: letters go upwards).
'no' backwards is 'on'.
'sign'+'ed'+'on'='SIGNED ON'

'to' is the link.

(Another definition for signed on that I've seen is " claimed benefit".)

I've seen this clue in The Telegraph.
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