Motherwell boss Jens Berthel Askou would be a "very good" choice to fill Celtic's managerial vacancy this summer, according to Robbie Neilson. Dane Askou, 43, has transformed the Steelmen into a slick passing side this season and has the club on course for a fourth-place finish. Former Hearts and Dundee United boss Neilson believes Celtic should move quickly in a bid to secure Askou, with the club facing a major squad rebuild.