In November, he suggested that Jamie Vardy was the best English striker of his generation, better even than Wayne Rooney or Harry Kane. He also claimed that League One side Barrow and then a doomed Southampton were the “worst” possible opponents for his Chelsea side, who went on to score five in both games.

Given that the West London side has spent a quarter of a billion on its midfield, it is truly bizarre that they are left with such a weak option in this position.

However, Chelsea is not alone in the race for Durán, who is valued at 80 million euros. Arsenal is also looking to strengthen its attack and has shown interest in the forward, which could complicate the Blues' aspirations in this market.

Chelsea have held fresh negotiations over signing a marquee centre-forward this week, following a personal request from manager Enzo Maresca.