Artist to travel to Yerevan, initially - the capital of Armenia (4)
I believe the answer is:
goya
'artist' is the definition.
(Francisco Goya)
'travel to yerevan initially the capital of armenia' is the wordplay.
'travel' becomes 'go' (synonyms).
'initially' indicates taking the first letters.
'the capital of' indicates taking the first letters.
The first letter of 'yerevan' is 'y'.
The initial letter of 'armenia' is 'a'.
'go'+'y'+'a'='GOYA'
'to' acts as a link.
(Other definitions for goya that I've seen before include "Eighteenth to nineteenth century Spanish artist" , "Portrait painter" , "He painted Wellington" , "Artist, died at Bordeaux, 1828" , "Great Spanish painter who depicted horrors of war" .)