Is sorry for traveller sent abroad (7)
I believe the answer is:
repents
'is sorry' is the definition.
(I've seen this in another clue)
'traveller sent abroad' is the wordplay.
'traveller' becomes 'rep' (travel company worker).
'abroad' indicates anagramming the letters.
'sent' anagrammed gives 'ents'.
'rep'+'ents'='REPENTS'
'for' is the link.
(Other definitions for repents that I've seen before include "Turns away from evil" , "Feels remorse for, sin perhaps" , "Expresses sorrow for sin" , "Feels sincere remorse" , "Present (anag.)" .)