Cite evidence to annex university with Church of England (6)
I believe the answer is:
adduce
'cite evidence' is the definition.
(to adduce is to cite something as evidence)
'annex university with church of england' is the wordplay.
'annex' becomes 'add' (I've seen this in another clue).
'university' becomes 'u' (abbreviation for university).
'with' is a charade indicator (letters next to each other).
'church of england' becomes 'CE' (abbreviation).
'add'+'u'+'ce'='ADDUCE'
'to' is the link.
(Other definitions for adduce that I've seen before include "Cite as evidence" , "Advance evidence for" , "Bring up in discussion" , "Cite as example or proof" , "Cue dad (anag)" .)