Road round Corsica perhaps making one annoyed (5)
I believe the answer is:
riled
'one annoyed' is the definition.
(I've seen this in another clue)
'road round corsica perhaps' is the wordplay.
'road' becomes 'rd' (abbreviation).
'round' is an insertion indicator.
'corsica perhaps' becomes 'ile' ('island' in French - Corsica is a French island).
'rd' placed around 'ile' is 'RILED'.
'making' acts as a link.
(Other definitions for riled that I've seen before include "Nettled" , "Annoyed" , "Made angry" , "Cross" , "Vexed" .)