Absolute horseshit. The first goal was merely the quality of the cross, the second was Sidibe playing Aubameyang on by dropping a yard too deep.
First goal he loses his man, no goal if he stays tight instead of wandering off. Second goal, when the pass is played Mina is 2m ahead of everyone else in the line. He's then the closest to catching the opponent so easily could have put pressure on the finish if he'd started in line with his teammates.