When Lyall left Upton Park, McGiven served for a short time at Chelsea as youth coach before reforming a partnership in Suffolk.   Promoted McGiven's first two years with Town were as first team coach but in the summer, at Lyall's suggestion, he was promoted to team manager.   Both Lyall and McGiven have remained at their London homes since coming to Ipswich.   Both are looking at property in Suffolk and Lyall has his London home up for sale.   Lyall and McGiven in the dugout taking Town to success.     Rugby Union Shujan warms up for Lincoln Ante-post offer may dry up ROBERT ARMSTRONG'S Shujan can win this afternoon's Normanton Handicap at Southwell to continue the increasingly popular trend of using the all- weather surface as a build-up to a bid for the Lincoln at Doncaster later this month (writes  our Newmarket correspondent).     This lightly raced four-year-old may have been underrated by the handicapper as he has twice been beaten since he made a winning debut at Doncaster late in the 1991 season as a two-year- old.   The Diesis colt had only two runs last season and on his final outing at York in July he was fourth to Golden Chip after which injury kept him off the course.   His connections have kept him in training because he showed plenty of ability on the gallops and their decision can pay its first fruits with a win today as he looks a cut above Debsy Do and Nellie Dean.