Isak trained at his former club, Real Sociedad, during Newcastle's tour of Asia and missed their 0-0 draw with Aston Villa on the opening matchday of the Premier League season

Newcastle and Isak are at war, but with so little time remaining of the transfer window, an uncomfortable truce may be more likely than his dream move to Liverpool.

Explained: The Swedish striker is determined to leave St James’ Park and Fifa’s amendments to article 17 give him an exit route next summer that would potentially cost Newcastle millions of pounds