The reliable Hammers news source claims that the Frenchman is clearly now frustrated with the Chilean continuing to play him up front on his own.
The 25-year-old has started nine of the Irons’ 10 Premier League games so far this campaign, and every one has seen him operate as the lone frontman in a 4-2-3-1 formation.
And the former Eintracht Frankfurt man’s body language was very negative against Sheffield United on Saturday, complete with a few irritated glares cast around the London Stadium.
Who could blame Haller for becoming frustrated with the way he is being utilised by Pellegrini? He is being left isolated up front, unsure of how deep to drop and when to make incisive runs forward, because he doesn’t know what sort of service he is going to get or if anyone is going to be close enough to him for him to lay the ball off to them. When you think back to his sensational performance for Frankfurt last season, which earned him his club record move to the London Stadium, he did all his best work alongside now-Real Madrid striker Luka Jovic. The two men brought the best out of each other and had a phenomenal natural understanding. Suddenly he is being left out on his own, and he doesn’t know quite what to do. The Frenchman is a fantastic striker, that much is clear, but he works best in a two. Unfortunately for him, Pellegrini doesn’t seem to trust fellow summer recruit Albian Ajeti, so who knows if he will change his tactics any time soon?