Anyway, I think Estigarribia will start against Roma. Imo, he was always planned to start that match. That's why he didn't start yesterday. Conte kept all the Roma starters on the bench (except those who don't get to run much, the CBs) and I think Esti is one of them.
After he kept the starters out, he played those who he thought are the best ones, which means that he preferred Krasic to Elia and Del Piero/Quag to Elia/Toni/Iaquinta.
In my opinion it's a mistake to prefer Esti to Del Piero for Roma, but I believe that's what will happen.