Almost due to get data (4)
I believe the answer is:
info
'data' is the definition.
(I've seen this before)
'almost due' is the wordplay.
'almost' means to remove the last letter (most of the word but not all of it).
'due' becomes 'infor' (someone 'in for' something is about to receive it).
'infor' with its last letter taken off is 'INFO'.
'to get' acts as a link.
(Other definitions for info that I've seen before include "Knowledge (colloq.)" , "Latest" , "Data received and understood (abbr)" , "News" , "Gen (abbr)" .)