North End midfielder Paul Gallagher will have two new team-mates to meet when the squad reassembles next Thursday.
Shaun Miller says it was a tough decision to swap Morecambe for Carlisle.
Preston North End supporters will have plenty of travelling to do in the 2016/17 campaign.
Preston are expected to find out early next week if they have managed to land transfer target Tommy Spurr.
Preston North End have been drawn at home to Hartlepool United in the first round of the League Cup.