Asian city left in frenzy (6)
I believe the answer is:
manila
'asian city' is the definition.
(capital of the Philippines)
'left in frenzy' is the wordplay.
'left' becomes 'l' (common abbreviation).
'in' indicates putting letters inside.
'frenzy' becomes 'mania' (I've seen this before).
'l' placed inside 'mania' is 'MANILA'.
(Other definitions for manila that I've seen before include "Island capital" , "Animal found in Philippines" , "Far East capital" , "Animal or capital in the Phillipines" , "Strong brown paper; cigar, cheroot" .)