Bale replaced Isco on the hour and connected with an outrageous acrobatic effort on 64 minutes to put Real back in front.
Egypt still looks like they will bring along Salah for the campaign, but whether he plays a game or not still remains in question.
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Barcelona, historically Real's greatest rivals, ran away with La Liga this season and finished 17 points clear of Zidane's side. Decision comes just days after he won the Champions League for the third year in a row. "Big players need a change", he added.
With the match still goalless, Salah fell to the floor writhing in pain after his left shoulder got caught underneath Real captain Sergio Ramos as they fell to the floor in midfield.
Spanish defender Dani Carvajal is still in contention to participate at the FIFA World Cup in Russian Federation despite injuring his hamstring playing for Real Madrid against Liverpool at the UEFA Champions League final on Saturday.
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But its position overlaps competing territorial claims from the Philippines, Vietnam, Taiwan and others. Wu Qian, said that the United States "gravely violated Chinese sovereignty".
"Dr. Abu Ela expressed his optimism that Salah to make the World Cup according to this diagnosis".
Spain kick off their Group B campaign at Russian Federation 2018 against Portugal in Sochi on June 15.
But with the tournament starting in just two and a half weeks, that leaves Salah with little chance of featuring, unless his injury is less serious than initially feared. "He has been committed to his rehabilitation and we are happy with his progress to date", said PCB in a statement issued from Jamaica. The medical team is optimistic that Salah will be ready to play for the Egypt football team in the upcoming world cup (sic).
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Egypt has been captivated by Salah since he moved to Liverpool from Rome last summer.