A long-abandoned superstore that has sat empty for almost five years is set to be taken over by Next and Costa Coffee. The former Mothercare unit on the Wincheap Retail Park in Canterbury has been vacant since the company went bust in 2020. But plans have now emerged for major clothing retailer Next to move into the large building, with Costa opening an outlet within the store. News the two British firms are teaming up to bring the neglected site back to life has delighted residents. Next already has a branch in the city centre, but shoppers keen to avoid £3.70-an-hour parking charges are buoy…