The most common and most likely answer to this crossword clue is the 8 letter word BECKONED
I've seen this crossword clue in Financial Times
B
E
C
K
O
N
E
D
Buddy explains!

The straight part
We know that "Called over" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case called over = beckoned.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 BECKONED mean?
BECKONED verb- To wave or nod to somebody with the intention to make the person come closer.
- To seem attractive and inviting