Rejection of some teeny donations is unlikely to cause offence (7)
I believe the answer is:
'unlikely to cause offence' is the definition.
(I've seen this before)
'rejection of some teeny donations' is the wordplay.
'rejection of' says the letters should be written in reverse.
'some' indicates a hidden word (some of the parts of the word are used).
'enydona' is hidden within 'teeny donations'.
'enydona' back-to-front is 'ANODYNE'.
'is' is the link.
(Other definitions for anodyne that I've seen before include "Dully uncontroversial", "Inoffensive, rather dull", "Relieving hurt", "lacking inspiration", "painkiller".)