Freedom perhaps to explore the factory’s routine (3-2-3-4)
I believe the answer is:
run-of-the-mill
'freedom' is the definition.
(I have seen 'Routine freedom' mean 'run of the mill' so perhaps 'freedom' could also mean 'run of the mill')
'to explore the factory's routine' is the wordplay.
I cannot really see how this works, but
'the' could be 't' (the is pronounced as a 't' sound in some dialects) and 't' is found in the answer.
'factory' could be 'mill' (mill is a type of factory) and 'mill' is present in the answer.
This may be the basis of the clue (or it may be nonsense).
'perhaps' acts as a link.
Can you help me to learn more?
(Other definitions for run-of-the-mill that I've seen before include "Everyday" , "Ordinary" , "Unexceptional" , "Bog standard" , "Mediocre" .)