Weekend I've arranged in Ukrainian city (4)
I believe the answer is:
kiev
'ukrainian city' is the definition.
(I've seen this before)
'weekend i've arranged in' is the wordplay.
'weekend' becomes 'k' (I've seen this in other clues**).
'arranged' is an anagram indicator.
'in' is an insertion indicator.
'ive' with letters rearranged gives 'iev'.
'k' put inside 'iev' is 'KIEV'.
(Other definitions for kiev that I've seen before include "Capital city of the Ukraine" , "place in eastern Europe" , "Ukraine's capital - way of cooking chicken" , "Ukraine's largest city" , "Capital of 13 down" .)