Tenant fuddled by ale sold here (11)
I believe the answer is:
leaseholder
'tenant' is the definition.
(I know that leaseholder is a type of tenant)
'fuddled by ale sold here' is the wordplay.
'fuddled' is an anagram indicator.
'by' means one lot of letters go next to another.
'ale'+'sold'='alesold'
'alesold'+'here' is 'alesoldhere'.
'alesoldhere' with letters rearranged gives 'LEASEHOLDER'.
(Other definitions for leaseholder that I've seen before include "One renting property" , "Person with property rights" , "Tenant" .)