The most common and most likely answer to this crossword clue is the 9 letter word CRITICISE
I've seen this crossword clue in Financial Times
C
R
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T
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C
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More clues leading to the result CRITICISE
Buddy explains!

The straight part
We know that "Pan" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case pan = criticise.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 CRITICISE mean?
CRITICISE verb- To find fault (with something).
- To evaluate (something), assessing its merits and faults.