Photo taken on Aug. 10, 2020 shows the general view of the Luz Stadium in Lisbon, Portugal, two days before the beginning of the UEFA Champions League's quarterfinals. (Photo by Pedro Fiuza/Xinhua)

Photo taken on Aug. 10, 2020 shows the general view of the Luz Stadium in Lisbon, Portugal, two days before the beginning of the UEFA Champions League's quarterfinals. (Photo by Pedro Fiuza/Xinhua)

Photo taken on Aug. 10, 2020 shows the general view of the Luz Stadium in Lisbon, Portugal, two days before the beginning of the UEFA Champions League's quarterfinals. (Photo by Pedro Fiuza/Xinhua)

Photo taken on Aug. 10, 2020 shows the general view of the Luz Stadium in Lisbon, Portugal, two days before the beginning of the UEFA Champions League's quarterfinals. (Photo by Pedro Fiuza/Xinhua)

Photo taken on Aug. 10, 2020 shows the general view of the Alvalade Stadium in Lisbon, Portugal, two days before the beginning of the UEFA Champions League's quarterfinals. (Photo by Pedro Fiuza/Xinhua)

Photo taken on Aug. 10, 2020 shows the general view of the Alvalade Stadium in Lisbon, Portugal, two days before the beginning of the UEFA Champions League's quarterfinals. (Photo by Pedro Fiuza/Xinhua)

Photo taken on Aug. 10, 2020 shows the general view of the Luz Stadium in Lisbon, Portugal, two days before the beginning of the UEFA Champions League's quarterfinals. (Photo by Pedro Fiuza/Xinhua)

Photo taken on Aug. 10, 2020 shows the general view of the Luz Stadium in Lisbon, Portugal, two days before the beginning of the UEFA Champions League's quarterfinals. (Photo by Pedro Fiuza/Xinhua)