Dismissed a Times journalist (4)
I believe the answer is:
axed
'dismissed' is the definition.
(I've seen this in another clue)
'a times journalist' is the wordplay.
'times' becomes 'x' (2 times 4 is 2 x 4).
'journalist' becomes 'ed' (short for editor).
'a'+'x'+'ed'='AXED'
(Other definitions for axed that I've seen before include "Fired - cut down" , "Sacked or terminated - with hatchet?" , "Sacked with a hatchet? (4)" , "Abandoned, given the chop" , "Made redundant" .)