Italian sculptor to give to charity fifty pound ring (9)
I believe the answer is:
donatello
'italian sculptor' is the definition.
(I've seen this before)
'give to charity fifty pound ring' is the wordplay.
'give to charity' becomes 'donate' (I've seen this before).
'fifty' becomes 'l' ('L' can be a synonym of 'fifty').
'pound' becomes 'l'.
'ring' becomes 'o'.
'donate'+'l'+'l'+'o'='DONATELLO'
'to' acts as a link.
(Other definitions for donatello that I've seen before include "Famous Florentine sculptor" , "C 15 Florentine sculptor" , "Italian sculptor" , "Chipper" , "Italian artist" .)