Old outlaw in Scottish town (4)
I believe the answer is:
oban
'scottish town' is the definition.
(I've seen this before)
'old outlaw' is the wordplay.
'old' becomes 'o' (abbreviation).
'outlaw' becomes 'ban' (banning is a kind of outlawing).
'o'+'ban'='OBAN'
'in' is the link.
(Other definitions for oban that I've seen before include "Scottish town" , "Argyll and Bute resort" , "port required" , "Northern port" , "Scottish west coast resort" .)