Judge about to release European on the inside (7)
I believe the answer is:
referee
'judge' is the definition.
(I've seen this before)
'about to release european on the inside' is the wordplay.
'about' becomes 're' (regarding).
'to release european on' becomes 'fere' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'the' becomes 'definitearticle'.
'inside' says to take the centre.
The centre of 'definitearticle' is 'e'.
're'+'fere'+'e'='REFEREE'
Can you help me to learn more?
(Other definitions for referee that I've seen before include "Sports adjudicator" , "Umpire; arbitrator" , "Official who ensures fair play" , "Judge" , "Sports official" .)