The Italy midfielder, with a deal to 2029, is being linked with Arsenal and Juventus ahead of the summer market.
However, before their win at Manchester United last night, Tonali admitted he wants to be part of Newcastle's leadership group next season.
Asked if he'd like to take the spot left behind by Jamaal Lascelles, who is leaving this summer, Tonali told beIN SPORTS: "Yeah, of course. We are a bit different because Jamaal was a great leader, he spoke every week, every game to our team, to every player.
"He was great with everybody, and alone in the private meetings and really was a bit different to me.
"It would be a little bit tough because it's not my first language, but I will try. I try to do my best. I try to help every player in the pitch. And I think this is should be for every player, not just for me."
He added, "I think we have six or seven players in the leadership group, they all really helped me, especially the first year, three years ago, for me it was very difficult.
"Especially, Jacob Murphy, Callum Wilson, Jamaal, Bruno and Joelinton as well. Every day, they helped me a lot in that the first the first season. And they help every player now in in our team."