Put back after he got quite upset (3,2)
I believe the answer is:
het up
'quite upset' is the definition.
(het up means agitated or upset)
'put back after he' is the wordplay.
'back' says the letters should be written in reverse.
'after' means one lot of letters go next to another.
'put' reversed gives 'tup'.
'tup' after 'he' is 'HET UP'.
'got' is the link.
(Other definitions for het up that I've seen before include "Angry - excited" , "Angry - agitated" , "Upset, agitated" , "in a rage?" , "On edge - agitated" .)