Pep Guardiola has already admitted the Alexander Isak mistake Manchester City made, it could now haunt him

A direct rival of Manchester City could be about to significantly strengthen themselves in Liverpool.

Manchester City fans are concerned after hearing Liverpool could sign Alexander Isak – following a new development in which the Swede has asked to leave Newcastle this summer.

The Reds have already made several key moves, spending £116m to sign Florian Wirtz – who Manchester City looked at – and an initial £69m on Hugo Ekitike.

Milos Kerkez – another target for Manchester City –…