The most common and most likely answer to this crossword clue is the 3 plus 2 plus 3 plus 4 letter word RUN ON THE BANK
I've seen this crossword clue in The Daily Telegraph
R
U
N
O
N
T
H
E
B
A
N
K
Buddy explains!
The straight part
We know that "Go for a riverside jog/financial crisis" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case go for a riverside jog/financial crisis = run on the bank.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.