Of the reports surrounding Ronaldo, Santos said that "you have to be careful about from where" they came from and refused to state that Portugal are the favourites for the Confederations Cup, suggesting instead that they are merely "a candidate".
The rumours have emerged in the wake of an official legal complaint made by Spanish prosecutors in which Ronaldo was accused of a "voluntary" and "conscious" breach of his tax obligations, totalling EUR14.7million.
Real Madrid player Ronaldo, 32, is the most decorated footballer in his team.
While Germany coach Joachim Loew is resting his top players, Portugal have arrived at their first Confederations Cup appearance with world player of the year Cristiano Ronaldo their talisman as they hope to follow up Euro 2016 success with a triumph in Russian Federation.
Club president Nasser El-Khelaifi would jump at another chance to sign Ronaldo, even if there were suggestions he leveraged PSG's interest to boost the multi-million euro contract extension he signed previous year.
Two weeks ago, he had also scored twice in the Champions League final to lead Madrid to its second consecutive title in the European club competition. "I trust him 100 per cent as an athlete and as a man". "I have a pact with the players and we treat these personal matters away from the national team".
"All players aim to go far and dream of raising trophies", said 21-year-old Silva, who has broken into the Portugal team this year.
"I don't have any fear marking a player who right now is doing big things with his club and, knowing coach Osorio, it won't be only Carlos Salcedo in charge of making that happen, making sure we're successful", Salcedo told ESPN. "Obviously we will have special considerations for him, for the magnificent player that he is". We have already shown our strength in the past, and we want to do it again.
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After Russia's 2-0 win over New Zealand in the tournament's opening game, both sides will be aiming to open their accounts with three points with qualification very much expected for both sides.
Winners of Euro 2016 thanks to a wonderful extra-time victor from striker Eder, Portugal are one of the surprise qualifiers for the 2017 Confederations Cup, and will be making their competition debut as they line-up against Mexico on 18 June.
Portugal is making its first appearance in the Confederations Cup, the eight-nation competition played by continental champions plus host Russian Federation and World Cup victor Germany. Group B has Germany, Chile, Australia and Cameroon.
And, having exited the 2016 European Championships at the group stage, accumulating just one point and playing some of the poorest football of all sides at the competition, such qualification was certainly something of a luxury for the 63rd best team on the planet.
After the report, global media filled Portugal's training session in Kazan, where Ronaldo trained normally with the rest of the squad.
In this photo taken on Tuesday, March 28 2017, Portugal's Cristiano Ronaldo gestures during the global friendly soccer match between Portugal and Sweden at the dos Barreiros stadium in Funchal, Madeira island, Portugal.
(AP Photo/Thanassis Stavrakis). Portugal's Cristiano Ronaldo plays with the ball during a training session at Kazan Arena in Kazan, Russia, on Saturday, June 17, 2017.