In August 2008, the Bulgaria national team coach Plamen Markov called Stanislav in Bulgaria national football team in a match against Bosnia and Herzegovina national football team. Manolev made his official debut and Bulgaria won the match as a guest.
In August 2008, the Bulgaria national team coach Plamen Markov selected Stanislav in the Bulgaria national football team for a match against Bosnia and Herzegovina national football team. Manolev made his official debut and Bulgaria won the match as a guest.