Liverpool chief Damien Comolli says more signings will follow Jordan Henderson.
The 20-year-old is the third major signing since Kenny Dalglish's return as manager, with Andy Carroll and Luis Suarez joining in January.
Now Comolli has said there is more to come.
"We wanted to make a signing early. The earlier the better because we can then re-adjust our strategy or decide we aren't going to do any more - which won't be the case now!" Comolli is quoted as saying in the Daily Mirror.
"I'm very pleased, because Jordan was one of the big targets we had. When you get your first target it's always a good sign because you think the others will come through as well."