Coach tour arranged around Turkey's capital (5)
I believe the answer is:
tutor
'coach' is the definition.
('tutor' can be a synonym of 'coach')
'tour arranged around turkey's capital' is the wordplay.
'arranged' indicates anagramming the letters.
'around' is an insertion indicator.
'capital' suggests taking the first letters.
The initial letter of 'turkeys' is 't'.
'tour' with letters rearranged gives 'tuor'.
'tuor' going around 't' is 'TUTOR'.
(Other definitions for tutor that I've seen before include "Mentor" , "Personal teacher" , "college teacher" , "Teach" , "He shows us the way" .)