Footballer, perhaps, one settling outside Liverpool at last (6)
I believe the answer is:
player
'footballer perhaps' is the definition.
(I know that football player is a type of player)
'one settling outside liverpool at last' is the wordplay.
'one settling' becomes 'payer' (eg someone settling a bill).
'outside' indicates putting letters inside.
'at last' indicates one should take the final letters.
The final letter of 'liverpool' is 'l'.
'payer' enclosing 'l' is 'PLAYER'.
(Other definitions for player that I've seen before include "One taking part in a game" , "Actor; sportsman" , "Partaker in game" , "Active sportsperson" , "Actor - musician" .)