Billed as the biggest club game in South American football history, the hotly anticipated Argentinian fixture was twice delayed last Saturday, postponed until Sunday and then called off following an attack by River Plate fans on the Boca team coach.
The second leg of the Copa Libertadores final between Boca Juniors and River Plate has been moved to the Bernabeu in Madrid.
Argentina's two biggest teams drew the first leg 2-2 at Boca's La Bombonera on November 11 and were due to play the decisive second match at River's Monumental stadium last Saturday.
Both sets of fans are now expected to have tickets, although it is hoped the more violent element won't make such a long trip to Spain.
Away fans have been barred from stadiums in Argentina since 2013 due to football-related violence that has seen more than 300 people killed in the last 50 years, according to one charity.
Boca players suffered cuts from the glass from broken windows and were also affected by the tear gas used by police to disperse the crowds.
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CONMEBOL announced on Tuesday that it would be seeking alternative locations and moving the game outside of Argentina altogether for the safety of its players.
The match between the Buenos Aires rivals hangs delicately in the balance after a 2-2 draw in the first leg.
As the chaotic mess that is this season's Copa Libertadores final continues to unravel, we can at least say there has been some progress in developments.
Earlier, Spain's Prime Minister Pedro Sanchez said his country would be willing to host the game.
He said Spain has "ample experience in such events and is already working on the necessary deployment to guarantee the security of the event".
River and Boca are the two most popular teams in Argentina, allegedly commanding between them 70 percent of the country's football fans. They had won the first leg 2-0.