Please don't say you can't see a difference. The ball is clearly deliberately played by a Spurs defender to Salah. Lovren deflects the ball to Kane. I'm with Hackett. Otherwise you're having to judge when a ball hits a defender's leg, whether he meant to put his leg there? (Would that make it a deliberate play?)
In any case, neither official knew if Lovren had touched the ball. How can you give a penalty when the attacker was in an offside position and you don't know if a defender had touched it (whether you call it deliberate or deflection)? If you don't know if he touched the ball at all, it really doesn't sound like you saw him deliberately play it. Daft decision.