Street poet outside old university getting money from Bulgaria (9)
I believe the answer is:
boulevard
'street' is the definition.
(boulevard is a kind of street)
'poet outside old university getting money from bulgaria' is the wordplay.
'poet' becomes 'bard' (bard is a kind of poet).
'outside' means one lot of letters goes inside another.
'old university getting' becomes 'ou' (I can't explain this - if you can you should believe this answer much more).
'money from bulgaria' becomes 'lev' (currency of Bulgaria).
'ou'+'lev'='oulev'
'bard' enclosing 'oulev' is 'BOULEVARD'.
(Other definitions for boulevard that I've seen before include "tree-lined road" , "Broad urban road" , "Broad avenue" , "Wide tree-lined street" , "Long, wide avenue" .)