Burly, Welsh scoundrel becomes carnival attraction (3,5)
I believe the answer is:
big wheel
'carnival attraction' is the definition.
The definition and answer can be both people as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'burly welsh scoundrel' is the wordplay.
'burly' becomes 'big' (I can't justify this - if you can you should believe this answer much more).
'welsh' becomes 'W' (abbreviation).
'scoundrel' becomes 'heel' (heel can mean a scoundrel or villain).
'big'+'w'+'heel'='BIG WHEEL'
'becomes' acts as a link.
Can you help me to learn more?
(Other definitions for big wheel that I've seen before include "Important person - fair attraction" , "Fairground attraction - important person" , "Fairground ride" , "Amusement as London Eye" , "Fairground attraction - VIP" .)