Miscellany offered by wandering gleeman (7)
I believe the answer is:
melange
'miscellany' is the definition.
(I know that melange is a type of miscellany)
'wandering gleeman' is the wordplay.
'wandering' is an anagram indicator.
'gleeman' is an anagram of 'MELANGE'.
'offered by' is the link.
(Other definitions for melange that I've seen before include "Confusion" , "Mixed bag" , "Miscellany" , "A motley assortment of things" , "mixed collection" .)