Pep Guardiola says Virgil van Dijk is worth every penny of the £75 million Liverpool paid for the Netherlands international last January - despite Manchester City refusing to match Southampton's valuation.
Jurgen Klopp worked to cure the Reds' defensive issues by signing the imposing Van Dijk for a world record fee for a centre-back.
The ex-Celtic star was heavily linked with a move to the Etihad Stadium but eventually moved to Merseyside 12 months ago, helping the Reds reach the Champions League final in his opening six months at the club.
The Amazon Prime documentary 'All or Nothing' which followed City throughout the 2017-18 season showed footage of chairman Khaldoon Al-Mubarak questioning Southampton's asking price with director of football Txiki Begiristain and chief executive Ferran Soriano.