The most common and most likely answer to this crossword clue is the 8 letter word OBSERVER
I've seen this crossword clue in The Daily Telegraph
O
B
S
E
R
V
E
R
More clues leading to the result OBSERVER
- Reflective cleric going on unfortunately bores viewer
- One watching old boy against McEnroe?
- Round book printed on dedicated computer paper
- One who respects Sunday
- Old boy has computer paper
- Reporter of outside broadcast on tennis player
- Old bachelor, one handling emails for tabloid recently
- Upstanding cleric’s after new robes, one notices
- Paper witness
- Outside broadcast gets player hitting first ball to spectator
Buddy explains!

The straight part
We know that "I see" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case i see = observer.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 OBSERVER mean?
OBSERVER noun- One who makes observations, monitors or takes notice
- One who adheres or follows laws, guidelines, etc.
- A person sent as a representative, to a meeting or other function to monitor but not to participate
- A country or other entity which has limited participation rights within an organization.
- A crew member on an aircraft who makes observations of enemy positions or aircraft
- A sentry etc. manning an observation post