Nothing in place; pull a long face (4)
I believe the answer is:
pout
'a long face' is the definition.
(thesaurus)
'nothing in place' is the wordplay.
'nothing' becomes 'O' (O resembles 0).
'in' means one lot of letters goes inside another.
'place' becomes 'put' (synonyms).
'o' inserted inside 'put' is 'POUT'.
'pull' acts as a link.
I am not very happy about this link. It may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for pout that I've seen before include "Express sulks with lips" , "Moue - sulk" , "Push lips out in petulance" , "prepare for selfie?" , "Push out the lips (alluringly?)" .)