The move, which is subject to planning approval, could see trading in the new branch start as early as next year. Kay Chaldecott, managing director of Capital Shopping Centres, said: "We are delighted to have concluded terms with Sainsbury's for their new superstore in the retail park at Braehead. "It will create the conditions for new investment which will provide new employment opportunities in the area. "The existing Sainsbury's unit will be reconfigured, giving our shoppers even more choice and an even better shopping and leisure experience."