Expert to position table (7)
I believe the answer is:
propose
'table' is the definition.
(I've seen this before)
'expert to position' is the wordplay.
'expert' becomes 'pro' (short for professional).
'to position' becomes 'pose' ('pose' can be a synonym of 'position').
'pro'+'pose'='PROPOSE'
(Other definitions for propose that I've seen before include "advance" , "Tender" , "table" , "Put forward (an idea)" , "Put forward (motion)" .)