Paris Saint-Germain defender Thiago Silva has said he has always been a Barcelona fan and could potentially play for the Catalan club later in his career.
Silva, 28, who has been declared fit for Wednesday's Champions League quarter-final second leg between the two sides, was heavily linked with a move to Barcelona last summer but instead completed a €42 million move from AC Milan to PSG.
The Brazilian told Mundo Deportivo the lure of playing for his boyhood club had been tempting but he had decided to keep a promise to his previous Milan coach Leonardo, now PSG's director of sport.
"There were conversations with my agent, but we had given our word to Leonardo, who I knew from Milan," Silva said. "Once I gave my word, it was difficult to pull back. But you never know what might happen in the future. People dream.
"I have always been a Barca fan since I was a boy, when they had Romario, Rivaldo, Ronaldo... I am their No. 1 fan. After Wednesday, I will continue to be. I am happy at the moment at PSG, and I hope to keep helping this project."
Asked whether there was a release clause in his PSG contract that Barca could trigger to force a move, Silva suggested something like that could potentially happen.
"I have just arrived here [at PSG], I am not thinking about that, my agent looks after those things," he said. "But the people know that such bureaucratic things can be resolved in some way. “When you sign a contract, you expect to fulfil it, but this depends on a lot of things. You never close the door as you do not know what might happen. I am happy now, but you can never speak about the future."
Turning his attention to Wednesday's game at the Camp Nou, from which Barcelona are favourites to progress after last week's first leg at the Parc des Princes ended 2-2, Silva said he believed his current team could spring a surprise.
"Only a win will do for us to go through to the next round," he said. "So we need to defend well so as not to concede, and to show personality when we have the ball. With the attackers we have, we can do them damage."
Barcelona's injury issues, including the doubts over Lionel Messi's fitness, were a potential advantage for PSG, the Brazil international said.
"It is very difficult to mark [Messi] because he is very quick, he carries the ball stuck to his feet," he said. "The truth is if he does not play it will be a relief for me - but not completely, as they have [David] Villa and Pedro [Rodriguez] is coming back.
“The losses of [Carles] Puyol and [Javier] Mascherano are a bigger problem for them. They have to improvise at the back, which will complicate things for them a little, although Barca are always Barca. They do not just have the best player in the world, but the best team too."