German accommodated by the French supporters (4)
I believe the answer is:
legs
'supporters' is the definition.
'german accommodated by the french' is the wordplay.
'german' becomes 'g' (abbreviation).
'accommodated by' is an insertion indicator.
'the french' becomes 'les' (plural form of 'the' in French).
'g' inserted within 'les' is 'LEGS'.
(Other definitions for legs that I've seen before include "Sections of a journey or course" , "Stages of a journey" , "associated with 11 in game" , "Lower limbs" , "Members" .)