"FC Barcelona have reached an agreement for the hiring of Gerardo Martino as the new coach of the first team for the next two seasons," said a statement on the club's website.
"In the next few hours a programme will be confirmed for his arrival in Barcelona, the signing of his contract and his presentation."
Martino is not expected to take charge when Barca face their old manager Pep Guardiola in their first pre-season friendly away to Bayern Munich on Wednesday.
Barca were suddenly forced into looking for a new boss just last week when Tito Vilanova sadly had to resign due to an ongoing battle with cancer.
Martino has no previous managerial experience in Europe, although he did enjoy a brief spell in Spain with Tenerife as a player in 1991.
However, it is his great success as a coach in both Paraguay and Argentina that has convinced the Catalans that he is the right man for the job.
He led the South Americans to their best ever performance in a World Cup in 2010 where they were narrowly beaten 1-0 by Spain in a nervy quarter-final in Johannesburg.
