The most common and most likely answer to this crossword clue is the 2 plus 5 letter word IN TOUCH
I've seen this crossword clue in The Guardian
I
N
T
O
U
C
H
More clues leading to the result IN TOUCH
- Communicating off the field of play
- Corresponding measure to keep criminal out
- Up-to-date creep keeps dashing out
- Acquainted with molten tin? That hurts!
- Communicating 3, but at Kingsmeadow, not SW19
- Clued up and enthusiastic about University College Hospital
- Up-to-date communicating
- Brief journey in Arran, perhaps with relations?
- Having regular contact off the field
- Communicating beyond the field of play at Twickenham?
Buddy explains!

The straight part
We know that "Clued up" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case clued up = in touch.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.