He made arty films and collapsed in one (7)
I believe the answer is:
fellini
'he made arty films' is the definition.
The definition suggests a singular noun which matches the answer.
'collapsed in one' is the wordplay.
'collapsed' becomes 'fell' (I've seen this before).
'one' becomes 'i' (Roman numeral).
'fell'+'in'+'i'='FELLINI'
'and' acts as a link.
Can you help me to learn more?
(Other definitions for fellini that I've seen before include "Federico --, Italian film producer" , "Italian film-maker, d. 1993" , "Federico ------- (1920-1993), Italian film director" , "It. film director (La Dolce Vita)" , "It. director of Satyricon" .)