European with chapter in ceremony to repeat from memory (6)
I believe the answer is:
recite
'repeat from memory' is the definition.
(I've seen this in another clue)
'european with chapter in ceremony' is the wordplay.
'european' becomes 'e' (abbreviation e.g. EU).
'with' means one lot of letters go next to another.
'chapter' becomes 'c' (abbreviation).
'in' is an insertion indicator.
'ceremony' becomes 'rite' (rite is a kind of ceremony).
'e'+'c'='ec'
'ec' put into 'rite' is 'RECITE'.
'to' is the link.
(Other definitions for recite that I've seen before include "Repeat, recount" , "Repeat aloud from memory, say a poem" , "Reel off" , "Repeat aloud from memory as for audience" , "Ire etc (anag)" .)