Jozy Altidore is prepared to leave Sunderland in January.
The USA striker is frustrated over his lack of first team football.
"I thought I've done everything I could this season to come in fit, and get as fit as possible with the injury, and try and make an impact when I played.
"(The next) four years, I want to be part of the national team. Jurgen (Klinsmann) makes his messages very clear, and nobody is different.
"If it doesn't turn around, in January then I'll be looking to start elsewhere, and make sure I'm in his plans going forward.
"I'm still not fit yet, where I want to be. Running around after all these guys (his US teammates) it's been fun and I'm excited to be here. They send the right message, so it's good."
