The most common and most likely answer to this crossword clue is the 5 letter word SENTE
S
E
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Buddy explains!
The straight part
We know that "currency unit in African country" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case currency unit in african country = sente.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 SENTE mean?
SENTE noun- A subdivision of currency, equal to one hundredth of a Lesotho loti.
- (Go) first move, initiative