United confirmed the appointment of Rangnick as interim manager on Monday but the German is still waiting to receive a work permit that would enable him to officially take over.
"Literally, I haven't really got anything to update you on," Carrick said. "Apart from the work permit process is ongoing now as we speak and I'm in this position as I was for Villarreal and Chelsea, getting the boys ready for the game tomorrow night.
"Have I spoken to him? No. It's pretty much as it was when I said there, about both games we've already been to, because of the process and the work permit we haven't been able to. So we've carried on as we have done, it's worked well for the last two games and, hopefully, it works well tomorrow."
He added: "I'm always prepared to learn, I've learnt an awful lot this week, learnt on the job but, I've been pretty close and seen what goes on at close hand in recent years. It's been a bit of a step up but not as much as people think."
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