Man allowed to display garland (7)
I believe the answer is:
chaplet
'garland' is the definition.
(I know that garland can be written as chaplet)
'man allowed' is the wordplay.
'man' becomes 'chap' (term for a man).
'allowed' becomes 'let' (to let is to allow or permit).
'chap'+'let'='CHAPLET'
'to display' acts as a link.
(Other definitions for chaplet that I've seen before include "flower arrangement" , "Garland or wreath for the head" , "Little fellow" , "Ornamental wreath worn on the head" , "Circular garland for the head" .)