ROME (Reuters) - The leader of Italy’s anti-establishment 5-Star Movement, Luigi Di Maio, on Sunday made a last-ditch offer to the far-right League in a bid to break a political deadlock that has dragged on for more than two months.

FILE PHOTO: FILE PHOTO: Anti-establishment 5-Star Movement Luigi Di Maio looks on during a news conference at the Foreign Press Club in Rome, Italy, March 13, 2018. REUTERS/Tony Gentile/File Photo

For the first time since the March 4 vote ended with a hung parliament, Di Maio said he would pick a prime minister with League leader Matteo Salvini. Until now, Di Maio has insisted that he be the next premier.

“If the goal is to put into action an election platform and the obstacle is Luigi Di Maio as premier, then I say let’s choose a prime minister together,” Di Maio said referring to the League during an interview on RAI state television.

The move came hours before a third and possibly final round of formal consultations with President Sergio Mattarella. 5-Star will meet the president at 10 a.m. Rome time (0800 GMT) on Monday, with the League leading the center-right delegation to the presidential palace an hour later.

While Di Maio conceded the prime minister’s office, he held his ground on insisting that Salvini abandon his ally, former prime minister Silvio Berlusconi, who 5-Star views as a symbol of political corruption.

“The ball is now in the center-right’s court,” Di Maio added, saying he did not know if Berlusconi would take “a step back”.

Salvini, Berlusconi and Giorgia Meloni - the leaders of the center-right alliance - met for more than two hours in the evening, and agreed to see each other again in the morning before their appointment with the president.

“For now the center-right remains united, but it’s not over yet,” a senior source in Berlusconi’s party said after Sunday night’s talks.Salvini has repeatedly refused to break with Berlusconi over the past two months. If the alliance remains united this time, Mattarella is expected to try to put forward a stopgap government to take Italy back to a vote later this year.

Di Maio said if 5-Star fails to come to an agreement with the League, he wants an election as soon as possible, as early as this summer. 5-Star will not support any government put together by Mattarella, Di Maio said.

Such a short-term government could only take office with full powers if it has the support of either 5-Star or the League, and both parties have been hostile to the idea.

“A government put together by the president would not have the numbers (in parliament),” Di Maio said. “We cannot vote confidence in it and as far as I know, neither would the League.”

Di Maio’s latest offer to the League followed Salvini’s proposal on Friday for the formation of a stopgap government between the center-right and 5-Star that would be tasked with writing a 2019 budget and preparing for a new election.

Mattarella, who has the power to select prime ministers and dissolve parliament, has sought to avoid another vote by conducting meticulous and patient negotiations, but now a source familiar with the situation has said an election in September or October cannot be ruled out.

“I thought it would be difficult (to form a government), but I didn’t think it would be impossible,” Di Maio said.