United have this month been linked with a ??120million bid for Bale, who signed a six-year deal with Real Madrid at the time of his world-record move from Tottenham in 2013.
But the Wales star told Spanish radio station??Cadena Ser he has no plans to leave the Bernabeu before the end of his contract.
“I can’t imagine myself at Manchester United,” he said. “In a recent interview they asked me if I was unhappy at Real and I told them I’m really happy here.
“I’ve got several years left on my contract, I’m enjoying myself, we’re winning trophies and I want to keep doing that here at Real.”
Bale won the Champions League in his first season at Real, scoring in the final against Atletico Madrid, and has 14 goals already this term.