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With Darwin Nunez set to be unveiled as a Liverpool player on Tuesday, there is one important question hanging over his signing.

Is the £80m the club will potentially spend on his transfer an expensive remedy to a careless mistake in allowing Sadio Mane to get close to the end of his contract without agreeing an extension…or is it a masterstroke?

There is a fascinating dynamic when a club as big as Liverpool allows one of their best players - Mane is an all time Liverpool great surely - to leave, and then spends massively on his replacement.

On the surface, it could look a little careless. Mane, after all, was the team’s best player in the final third of last season, a player who seemed at the peak of his powers as one of the best in the world right now.

Yet he is allowed to go to a direct European rival, for a transfer fee less than half what the club must pay for Nunez, who will undoubtedly operate in the same positions, so a natural replacement.

Some would argue it is not the best management of contracts, that Liverpool got it wrong in allowing the Senegal forward to get so close to the end of his current deal, when he still has plenty to give in his career.

Yet there is a counter argument - which the club themselves believe to be the case - that the signing of Nunez is an important stage in the evolution of Liverpool Football Club back towards the summit of world