Call at the coffee centre for a contribution (8)
I believe the answer is:
offering
'a contribution' is the definition.
(offering is a kind of contribution)
'call at the coffee centre' is the wordplay.
'call' becomes 'ring' (telephone call).
'at' says to put letters next to each other (I've seen this in other clues).
'centre' means to look at the middle letters.
The middle of 'coffee' is 'offe'.
'ring' after 'offe' is 'OFFERING'.
'for' is the link.
(Other definitions for offering that I've seen before include "Sacrifice to deity" , "Tendering - sacrifice" , "Oblation" , "Contribution, sacrifice" , "Presenting for acceptance or rejection" .)