The most common and most likely answer to this crossword clue is the 7 letter word REREADS
I've seen this crossword clue in The Daily Telegraph
R
E
R
E
A
D
S
Buddy explains!
The straight part
We know that "Has another look at sentence" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case has another look at sentence = rereads.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 REREADS mean?
REREADS verb- To read again.