The European Fee President Jean-Claude Juncker says he’ll step down when his present time period ends in 2019, German media report.
Mr Juncker additionally stated the UK might divide opinion amongst EU leaders as soon as Brexit negotiations start.
The previous Luxembourg prime minister grew to become president in 2014, with the help of 26 out of 28 EU governments.
However the UK was fiercely against his election, as he advocated deeper EU integration.
In his interview with broadcaster Deutschlandfunk (in German), Mr Juncker stated he had had “a high quality election marketing campaign” in 2014, “however there will not be a second one, as a result of I will not be placing myself ahead as a candidate for a second time”.
He additionally stated he thought the EU’s remaining 27 members might battle to remain united as they negotiated with Britain over the phrases of its exit from the EU.
“Do the Hungarians and the Poles need precisely the identical factor because the Germans and the French? I’ve severe doubts,” he stated.
The European Fee is accountable for proposing new EU laws, drawing up the EU’s funds and supervising EU funding.