Sutton: Celtic need £50m summer overhaul

Chris Sutton believes Celtic may need to spend more than £50m overhauling their squad this summer if they are to retain their Premiership title and compete in the Champions League.

Martin O'Neill led Celtic to their fifth title in a row on the last day of the season in May as a fractured campaign on and off the pitch ultimately yielded a double, with victory over Dunfermline also securing Scottish Cup success.