The fellow with a great deal gets serfs (6)
I believe the answer is:
helots
'serfs' is the definition.
('helot' can be a synonym of 'serf')
'the fellow with a great deal' is the wordplay.
'the fellow' becomes 'he' (I've seen this in other clues).
'with' means one lot of letters go next to another.
'a great deal' becomes 'lots' (I've seen this before).
'he'+'lots'='HELOTS'
'gets' acts as a link.
(Other definitions for helots that I've seen before include "They worked like slaves" , "Slave labour" , "Ancient Spartans, in hotels?" , "Serfs" .)