A design maybe new to old me (5)
I believe the answer is:
model
'a design' is the definition.
(thesaurus)
'new to old me' is the wordplay.
'new' indicates an anagram.
'old'+'me'='oldme'
'oldme' with letters rearranged gives 'MODEL'.
'maybe' acts as a link.
I am not very happy about this link. It may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for model that I've seen before include "She exhibits clothes on the catwalk" , "Fashion - prototype" , "Scale replica" , "Moss, say" , "dummy" .)