The most common and most likely answer to this crossword clue is the 7 letter word DERRICK
I've seen this crossword clue in The Daily Telegraph
D
E
R
R
I
C
K
Buddy explains!

The straight part
We know that "crane/man" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case crane/man = derrick.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 DERRICK mean?
DERRICK noun- A device that is used for lifting and moving large objects.
- A framework that is constructed over a mine or oil well for the purpose of boring or lowering pipes.
- A hangman.
- To hoist with, or as if with, a derrick.
- To remove (a pitcher).