The most common and most likely answer to this crossword clue is the 9 letter word OWNERLESS
I've seen this crossword clue in Independent
O
W
N
E
R
L
E
S
S
More clues leading to the result OWNERLESS
- Stray owls seen heading for recreation ground
- Unclaimed lenses, worn, almost new
- Old points about regulations abandoned by university and no longer claimed
- Len’s worse off but not possessed
- Bats, ernes and owls not under control
- Trouble in new roles is common, perhaps
- Stray slow seen heading for recreation ground
Buddy explains!

The straight part
We know that "no longer claimed" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case no longer claimed = ownerless.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.