The most common and most likely answer to this crossword clue is the 3 plus 6 letter word NEW YORKER
N
E
W
Y
O
R
K
E
R
More clues leading to the result NEW YORKER
- Statesman's amended style of delivery
- Maybe Durham employee entertains unknown American
- Knee worry sorted out by magazine
- Fresh delivery for Brooklyn addressee?
- Queens’ man‘s worry — knee being wrenched
- Fresh delivery of an American magazine
- Kerry Owen is playing for American city dweller
- Unused type of cricket ball for an American from the Big Apple
- Novel delivery by East American
Buddy explains!

The straight part
We know that "East American" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case east american = new yorker.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.