The 22-year-old midfielder has been a leading light in a remarkable season for Atletico, with his efforts helping them to the top of the table and through to the semi-finals of the UEFA Champions League.
Unsurprisingly, his high level of consistency and playmaking abilities have been noted by clubs across Europe.
Manchester United are reported to have been monitoring his situation for some time, and a big-money approach has been mooted as David Moyes prepares to undertake an Old Trafford rebuilding project.
Koke, though, claims to be happy where he is.
He only agreed an extension to his contract in January, taking him through to 2018, and the Spain international sees no reason to leave his home-town club any time soon.
"I am very happy and I do not think about leaving the club right now," Koke told Marca.
"I am happy at home, I want to continue here and that is why I have a long contract.
"The rumours in the paper will have no impact on my game. I am young, but I am calm.
"Now is the best moment to enjoy being at Atletico. My future here will be long."