Manchester United goalkeeper David de Gea remained coy on a possible clause in his contract that would allow him to move to Real Madrid.
De Gea endured a difficult start to the 2015-16 campaign, as he was temporarily dropped in favour of Sergio Romero at Manchester United when his future at the club was uncertain, due to strong interest from Madrid.
The goalkeeper recently signed a new contract with United until 2019, resolving his future after a summer of speculation, with some claiming his new deal contains a clause that would allow him to leave if Madrid meet a set fee.
However, the Old Trafford man was in no mood to go into details when questioned about the existence of such as clause.
"You should ask [my agent] Jorge [Mendes] that question; he's the one who pays attention to those details," he said.
Since returning to the United starting line-up, De Gea has since put in a string of impressive performances, with Spain's 1-0 Euro 2016 qualifying match with Ukraine his latest eye-catching display.
"I'm in the best form of my career. I always try and do my best. Things worked out well and the important thing was to win the game," he told reporters.
"I always give my all and against Ukraine luck was on my side too. This is the way forward.
"For a goalkeeper, all saves are important, but if I had to choose one, maybe the stop with my feet in the first half with the game tied at 0-0. I'd opt for that one as my favourite."
De Gea got the nod for Spain ahead of Iker Casillas, who was the man between the sticks in last week's 4-0 win over Luxembourg, but there is no animosity between the pair.
"Iker congratulated me on the performance," he said.
"He's been an elite player for so long, so it's natural he wants to help me along, of course.
"I just want to be at the top of my game to make the decision for Vicente del Bosque as difficult as possible as to who should start at Euro 2016."