The most common and most likely answer to this crossword clue is the 5 letter word SHALL
I've seen this crossword clue in The Sunday Telegraph
S
H
A
L
L
More clues leading to the result SHALL
Buddy explains!

The straight part
We know that "Intend" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case intend = shall.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 SHALL mean?
SHALL verb- (modal, auxiliary verb, defective) Used before a verb to indicate the simple future tense in the first person singular or plural.
- Used similarly to indicate determination or obligation in the second and third persons singular or plural.
- Used in questions with the first person singular or plural to suggest a possible future action.
- To owe.