anyone blaming one player over the other isn't being entirely fair. I honestly think both Akanji and Khusanov were at fault for Chelsea's goal;
Khusanov missing the initial header out of the sky wasn't really an issue, that actually happens quite a bit on a high ball, as long as the centre half pushes into the striker enough, it's pretty much fine.
Watching the vid (over and over), you can see exactly the above happens, then Akanji steams over. Then it's - in my eyes - lack of communication between 2 players who have never played with each other before plus one of which doesnt yet speak English.
Header missed, but Chelsea forward knocked off balance, you see it happen from centre halves, quite normal . Akanji steaming over to (presumably) help out, he reacts well;
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Khusanov presumably sees Akanji running over and does a little pull up, stands up a bit straight and sort of stops for a split second;
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Akanji gets there but pulls up - who knows why, perhaps because Khusanov has since started running to the ball again. In the image below, Khusanov is still in a non-committal state, both have confused each other. This is the origin of the error - whether through lack of talking or mis-reading body language on
both players accounts, neither are committed;
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Finally the header is a bad decision, but the groundwork is laid through complete lack of comms between centra halves. You might want to point to Eddie to get wider and nearer but with strikers lurking, he cant.
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rank communication between players not on the same wavelength yet. I can see the blame on both players, it should have just been cleared.