Real Madrid and Barcelona have been warned by La Liga president Javier Tebas that they will bankrupt the La Liga if they go ahead with plans for the European Super League.

Spain’s domestic league would suffer a 50 per cent reduction in all revenues if a “semi-closed” Super League became a reality, according to a new report by professional services firm KPMG for LaLiga.

Tebas also warned that Real Madrid and Barcelona would also lose in the long run if the ESL goes ahead.

With Florentino Perez and Joan Laporta keen spearheading the ESL breakout, Tebas warned while speaking at a press conference in Madrid: “In the medium term they would lose.

“They’re earning more but the domestic leagues will lose (revenue) and continue losing, so (Real and Barca) will be losing revenue in the domestic league.

“It might work for the first three years as far as broadcasting rights, but after the third or fourth year the value of their broadcasting rights will really drop and once they realise that it’s going to fall, we will all be bankrupt.

“Madrid and Barcelona have been competing in the league for 90 years. They became big by competing in these competitions. So now, trying to kick the rest (of the clubs) in the a**, I don’t think that’s fair either.

“They are part of this growth because the competition has allowed them to become big clubs.”