Berg rejoined Blackburn Rovers in September 2000, initially on loan for three months, before securing a permanent transfer under manager Graeme Souness. Rovers were promoted back to the Premier League in 2000–01. Further success followed for Berg in the following season, when Blackburn won the League Cup, beating Tottenham Hotspur 2–1 at the Millennium Stadium in Cardiff, with Berg lifting the trophy as captain.