Huth's representative Manfred Schulte says there is no truth in the reports and that the player is happy at Middlesbrough.
"I have seen the rumours, but there is nothing in it," Schulte told skysports.com. "Robert is under contract at Middlesbrough and he is happy there.
"He has settled there well and he has no plans to move.
"Robert is just focused on getting fit and being ready for the start of next season."