Clue: Free trader is stocking Goya, Chagall and Cezanne at last (3,6)
Answer: ART DEALER
Explanation: Free trader is stocking Goya, Chagall and Cezanne at last (3,6)
An envelope ('is stocking') of ALE ('Goy**A**, Chagal**L** and Cezann**E** at last') in ARTDER, an anagram ('free') of 'trader', with an &lit definition.