The most common and most likely answer to this crossword clue is the 6 letter word STEVEN
I've seen this crossword clue in The Daily Telegraph
S
T
E
V
E
N
More clues leading to the result STEVEN
- Eg Spielberg putting magnificent number in movie about time
- Speaker in dialect dialectologist eventually grasps
- Saint still a man
- Jobs formally scuppered by events?
- Dialect voice from Hertfordshire location, long time lost
- Having no debts, even more than one such chap is needed
- Man in street unruffled
- Spielberg’s playing fast and loose with events
- Spielberg in street uniform
Buddy explains!

The straight part
We know that "Man" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case man = steven.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.