Unkind, the German will wander (7)
I believe the answer is:
meander
'wander' is the definition.
(I know that wander can be written as meander)
'unkind the german' is the wordplay.
'unkind' becomes 'mean' (I've seen this in another clue).
'the german' becomes 'der' ('the' in German).
'mean'+'der'='MEANDER'
'will' is the link.
(Other definitions for meander that I've seen before include "Red mane (anag) - roam aimlessly" , "Wandering direction" , "Wind, bend" , "Ramble about aimlessly" , "Wander about, follow a winding course" .)