The most common and most likely answer to this crossword clue is the 8 plus 15 letter word BORUSSIA MONCHENGLADBACH
I've seen this crossword clue in Financial Times
B
O
R
U
S
S
I
A
M
O
N
C
H
E
N
G
L
A
D
B
A
C
H
Buddy explains!
The straight part
We know that "German team" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case german team = borussia monchengladbach.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.