Bayern Munich chief Karl-Heinz Rummenigge has denied talk Manchester United have lodged a £70million bid for forward Thomas Muller.

Reports had suggested the Germany international could be set to follow compatriot Bastian Schweinsteiger to Old Trafford after Ed Woodward tabled a big offer, but Rummenigge has rubbished the speculation.

The Bayern CEO described talk of a £70million bis as like "a flying duck over the ocean" when talking to Kicker.

It comes after Louis van Gaal on Tuesday promised United supporters he was working on a 'surprise' signing.

But speaking after victory over San Jose Earthqualkes last night, the Dutchman told reporters the mystery player is not a forward.

"I have read in the media a striker is the surprise," he said. "That's not right. It's something else."

"We have Rooney, he can play in striker's position, and all media had written he should play there so I listen and now you put this question so I don't know what you want.

"Also [Javier Hernandez] and maybe Wilson and maybe there comes a surprise. It's a process. I'm not worried about that position."