Dazn referee expert Marelli:“Strootman falls to the ground when Bisseck pushes him with two hands firmly on his back. It is a clear foul and I frankly expected VAR to intervene but it didn't which is surprising.
“It is very similar to another goal that Nicolò Casale saw disallowed for Lazio against Verona at the start of December. When there are two hands on the back to push, that is a foul.”