The fact Holtby's contract with Schalke runs out at the end of the season has only fuelled such reports, which he was asked about ahead of the Group B clash with the north Londoners.
"I think people talk about it too much in the media," Holtby said. "I am blue and white, I am with Schalke and agents are there to deal with that.
"My focus is on the squad, the team, the club and tomorrow's game.
"Other people can talk about it, but I just want three points for me and my team. Everything else I just put to the side.