Argentina boss Gerardo Martino has admitted he taught Lionel Messi absolutely nothing during his season in charge at Barcelona.
The coach took charge at Camp Nou for the 2013-14 season, but failed to win a major trophy after Atletico Madrid secured La Liga glory at their expense on the final day of the campaign.
Martino has previously acknowledged he made major mistakes during his time at the helm, but has now gone further by admitting to Argentine newspaper Clarin that he contributed very little to the progression of a star-studded Barca squad.
When asked what he had been able to teach his international captain Messi during their time together at Barcelona, Martino said: “Nothing. Nothing at all. Not to him or to Barca.