French art entertains cricket side for ages (4)
I believe the answer is:
eons
'ages' is the definition.
(eon is a kind of age)
'french art entertains cricket side' is the wordplay.
'french art' becomes 'es' ('is' in French - 'art' can mean 'is' eg 'thou art').
'entertains' indicates putting letters inside.
'cricket side' becomes 'on'.
'es' placed around 'on' is 'EONS'.
'for' is the link.
(Other definitions for eons that I've seen before include "Long periods of time - noes have it" , "Nose (anag)" , "Years and years" , "Very long periods (US)" , "Divisions of archaeological time" .)