Pay increase: some offer is expected (4)
I believe the answer is:
rise
'pay increase' is the definition.
(I've seen this before)
'some offer is expected' is the wordplay.
'some' says the answer is hidden in the clue (some parts of the word are used).
'RISE' is hidden in the letters of 'offer is expected'.
(Other definitions for rise that I've seen before include "Pay increase" , "Growth" , "Salary increase" , "To swell (bread)" , "more money" .)