Miss the old flipping footman! (6)
I believe the answer is:
lackey
'footman' is the definition.
(thesaurus)
'miss the old flipping' is the wordplay.
'miss' becomes 'lack' (lacking is a kind of missing**).
'the old' becomes 'ye'.
'flipping' shows that the letters should be reversed in order.
'ye' reversed gives 'ey'.
'lack'+'ey'='LACKEY'
(Other definitions for lackey that I've seen before include "An archaic menial or servant" , "An old servant or slavish person" , "An archaic servant or servile follower" , "assistant" , "Flunkey, sycophant" .)