Chile's Spanish coach Juan Antonio Pizzi (L) speaks to Chile's midfielder Charles Aranguiz during the 2017 Confederations Cup group B football match between Germany and Chile at the Kazan Arena Stadium in Kazan on June 22, 2017.
"We still have 24 hours to decide if he plays or not, he has reacted well to his injury and we'll take the decision tomorrow", said Santos when asked about the former Monaco winger.
They ended up with five points and second in the group.
"We knew it could be complicated because we had seen New Zealand play Mexico and the problems they caused the Mexicans".
"He's giving his best here and I think most players would like to be in a similar situation, because the best squads in the world want to have him, even if he is already at a good club", said Pizzi.
However, it was not all good news as Bernardo Silva went off injured at halftime while a needless and reckless challenge from Pepe, with his side 2-0 up, earned the controversial central defender his second yellow card of the tournament, ruling him out of Wednesday's semi-final.
Santos fielded an attacking line-up packed with experience and resisted the temptation to rest Ronaldo with Portugal still requiring a point to qualify and vying with Mexico and Russian Federation for top spot. Raphael Guerreiro is also still recovering from a left ankle blow he suffered in the 1-0 win over Russian Federation. - Cristiano Ronaldo has scored twice in this year's tournament - no other player has scored more often.
Silva finally provided Portugal with further breathing space 10 minutes from time as the AC Milan-bound striker ran at the Kiwi defence before drilling into the roof of the net. - Chile's four goals have been scored by different players (Arturo Vidal, Alexis Sanchez, Eduardo Vargas and Martin Rodriguez), with Vidal, Sanchez and Vargas also providing an assist.
Copa America holders Chile lead Germany on goal difference ahead of the final round of matches in Group B, although Australia and Cameroon still harbour outside qualification hopes.