I think with the injection of creativity and speed from Jack Grealish, this may actually be the key.
He was able to receive and distribute the ball, giving Kane the space to roam and therefore the service.
He did change the game...and I am not that much of a fan (I think it's his hair and the damn socks being down all the time).
Someone posted a photo of Grealish next to one of Keira Knightley circa Bend It Like Beckham — they had the exact same hairstyle.