Get back into the middle of the procession (7)
I believe the answer is:
cortege
'the procession' is the definition.
(cortege is a kind of procession)
'get back into the middle' is the wordplay.
'back' says the letters should be written backwards.
'into' means one lot of letters goes inside another.
'the middle' becomes 'core'.
'get' backwards is 'teg'.
'teg' put inside 'core' is 'CORTEGE'.
'of' acts as a link.
(Other definitions for cortege that I've seen before include "train" , "Entourage, retinue" , "Solemn funeral procession" , "Processing figures" .)