In the morning, chap becomes capital (5)
I believe the answer is:
amman
'capital' is the definition.
(Amman is an example)
'in the morning chap' is the wordplay.
'in the morning' becomes 'am'.
'chap' becomes 'man' (I've seen this before**).
'am'+'man'='AMMAN'
'becomes' acts as a link.
(Other definitions for amman that I've seen before include "Asian capital" , "Jordanian city" , "Middle East capital" , "A capital f-fellow in Jordan?" , "Jordan's capital" .)