Pay for part consultant re-attached (5)
I believe the answer is:
treat
'pay for' is the definition.
(I've seen this before)
'part consultant re-attached' is the wordplay.
'part' says the answer is hidden in the clue.
'TREAT' can be found hidden inside 'consultant re attached'.
(Other definitions for treat that I've seen before include "Something that causes special pleasure or delight" , "Behave towards" , "Deal with - source of great pleasure" , "Entertain at one's own expense" , "Engage in negotiations" .)