The most common and most likely answer to this crossword clue is the 8 letter word EVENTUAL
I've seen this crossword clue in The Times
E
V
E
N
T
U
A
L
More clues leading to the result EVENTUAL
- Concluding race unable to be seen regularly
- Final, incorrect net value
- Final episode unable to be shown regularly
- Final net value worked out
- Happening at university to almost everyone after a time
- Final value is to be replaced with net
- Impartial trade union meets a Labour leader after a time
- Happening to fellow supporting United in final
- Net value is adjusted — and that’s final!
- Final passage in European Union the French rejected
Buddy explains!

The straight part
We know that "Concluding" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case concluding = eventual.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does EVENTUAL mean?
EVENTUAL adjective- Finally resulting or occuring (after a period of time).
- Pertaining to events; event-related, evential.
- (NNSE or European Union) Possible, potential.