The most common and most likely answer to this crossword clue is the 7 letter word FIELDER
I've seen this crossword clue in Financial Times
F
I
E
L
D
E
R
More clues leading to the result FIELDER
- Long stop for one on the Queen’s unfinished WC?
- Cover point perhaps made by fine senior member about island
- Poem about senior member who participates in cricket?
- Condition backed by more senior cricketer, perhaps
- Provided backing before churchman’s slip, perhaps
- One fellow climbing tree makes slip?
- Uncertainty about tree cover perhaps
- Racing senior member of team trying to catch rivals?
- Motor racing by oldster leading to slip possibly
- Slip, perhaps, if turning round tree
Buddy explains!

The straight part
We know that "slip possibly" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case slip possibly = fielder.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 FIELDER mean?
FIELDER noun- A player of the fielding side, whose task is to gather the ball after the batsman has hit it, to catch the batsman out, or to prevent him from scoring.
- A defensive player in the field.
- A dog trained in pursuit of game in the field.
- One who fields anything.