Arsenal romped to a 5-0 victory over Crystal Palace yesterday, but it was another quiet game in midfield for Kai Havertz. The German has been disappointing in an advanced number eight role, as he has failed to replace Granit Xhaka’s ability to progress the ball. Despite Arsenal scoring five yesterday, at times they were still not attacking with much fluency, and Havertz made little contribution going forward. He was then substituted for Emile Smith Rowe, who was greeted with loud cheers by the Emirates crowd, and the 23-year-old was superb in his cameo off the bench. Smith Rowe was recently li…