Liverpool academy have Demitrius Lawrence trialling with them.
Coach Hughie McAuley told Liverpoolfc.tv: "It was a very good performance from the boys and we could have scored a lot more than the four we got, but the Carlisle goalkeeper was excellent.
"Marvin took his goals very well and we were able to give all of the squad a game which was the most important thing.
"David Amoo did very well and he was desperately unlucky not to score on the day."