Lampard says the youngster can be England's first-choice right-back.
He told the Daily Mail: "I tried to get him on loan at Derby last January. His delivery is too good, and when I say 'too good', I'm joking but I mean that we need to read what he's doing.
"We need to get bodies in the box because that's a huge asset.
"He's a great kid who's going to be a huge player for Chelsea. Without getting too far ahead, even though Trent is that good he'll be challenging him."