Bother friend with claim (7)
I believe the answer is:
palaver
'bother' is the definition.
(I've seen this before)
'friend with claim' is the wordplay.
'friend' becomes 'pal' (pal is a kind of friend).
'with' is a charade indicator (letters next to each other).
'claim' becomes 'aver' (I've seen this in another clue).
'pal'+'aver'='PALAVER'
(Other definitions for palaver that I've seen before include "Rabbit" , "Kind of discussion or idle chatter" , "idle conversation" , "Song and dance" , "Yak" .)