Split admitted by the German wanderer (7)
I believe the answer is:
drifter
'wanderer' is the definition.
(I know that drifter is a type of wanderer)
'split admitted by the german' is the wordplay.
'split' becomes 'rift' (I've seen this in other clues).
'admitted by' means one lot of letters goes inside another.
'the german' becomes 'der' ('the' in German).
'rift' inserted inside 'der' is 'DRIFTER'.
(Other definitions for drifter that I've seen before include "fellow lacking direction" , "Bum" , "Fishing boat; wanderer" , "tramp, perhaps" , "Ship - a tramp, possibly" .)