Soccer star Messi (6)
I believe the answer is:
lionel
'soccer star messi' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for lionel that I've seen before include "- Bart, (Oliver!)" , "Guy" , "Oil Len badly for another man" , "-- Bart; -- Richie" , "Blair possibly" .)