The move started with a 4 vs 3 in City's favour, Sterling was in advance of Marhez. Marhez then played the ball to Sterling (I don't know why as he would have been better to carry on his unopposed run, maybe because City are such a side team with their tactical fouling that he thought Aurier, who was trying hard to close him, might do the same on him, so he elected to pass early???). The pass wasn't clean and at no point did Sterling have it under control or even under his feet. In fact, Tanganga was now the favourite. 99/100 times that's the 'keepers ball, as he's the player with the view up the pitch, he would have shouted for it, claimed it, Tangagna didn't hear him and rather let the ball run he turned into Lloris's path. But I say again, that's Lloris's ball and were it not for Tanganga getting in the way he would have got to the ball.