Liverpool chief Damien Comolli cannot guarantee signings this month.
But he says any new arrival will depend on the say-so of manager Kenny Dalglish.
The Frenchman was asked who would have the final say on any January transfers: "I will stick to what I said from the beginning: if Kenny is not happy with a player we think could make the team better then it's always down to the manager. That hasn't changed.
"We didn't even have chance to talk about the transfer window yet. We have been working on it with Roy and the owners but I need to update Kenny on what's going on.
"Will there be some activity? I don't know. I still don't know. It's a very complicated market in January."