The 20-year old midfielder will join the Reds from Sunderland after this summer's U21 European Championships in Denmark and defender Kelly is very excited about the signing.
"Jordan's a great lad and really down to earth," he told LFC Weekly.
"We get on really well and I'm made up that he's made a mark on Sunderland's first team over the last few seasons. He has everything you need to become a footballer at the highest level.
"The thing I like about him most is that he keeps it nice and simple. You can give him the ball under pressure and he will always keep it, even in the tightest situations.
"He's very patient in possession and if you're under pressure you can give it to him and he'll take the sting out of a game and keep things ticking over.
"He is also the type of player who will weigh in with a number of assists every season and score a few too.
"Jordan is definitely the kind of player who will never let his head drop. He's got a lot of confidence in his own ability."