Land required for city centre layout (5)
I believe the answer is:
italy
'land' is the definition.
(Italy is an example)
'city centre layout' is the wordplay.
'city centre' becomes 'it' (centre of the word 'city').
'layout' becomes 'aly' (I can't explain this - if you can you should believe this answer much more).
'it'+'aly'='ITALY'
'required for' acts as a link.
(Other definitions for italy that I've seen before include "Laity (anag.)" , "Mediterranean country" , "Country of Bologna, Bari and Brescia" , "where Juventus normally play" , "Barolo wine from here" .)