City uncovered stone for writer (10)
I believe the answer is:
chesterton
'writer' is the definition.
(I've seen this before)
'city uncovered stone' is the wordplay.
'city' becomes 'chester' (Chester is an example).
'uncovered' indicates the central letters.
The centre of 'stone' is 'ton'.
'chester'+'ton'='CHESTERTON'
'for' is the link.
(Other definitions for chesterton that I've seen before include "Novelist who created Father Brown" , "Catholic author" , "G K - -" , "Father Brown author" , "Writer, creator of Father Brown" .)