Nah. We need a fullback who is very solid defensively, but also offers something going forward... Alex Sandro is exactly that. It also frees up Pogba to play more central as Alex Sandro then offers attacking impetus from the left. With Evra, Pogba is basically forced to play fairly wide left while attacking to provide width himself. This limits him quite significantly.
I don't think Evra is a bad option... but he's significantly inferior overall to Alex Sandro at this point, and you see it every match Alex Sandro is on the pitch, he's always one of our best performers. Whereas Evra is solid, but almost never one of our best players on the pitch.
Today, we didn't need Evra's "defensive solidity" until Bonucci went off with a knock. At that point, with RUgani in, it was great to have Evra on just for the experience and calm factor... but no one could have guessed BonBon would be injured before the match, and what we most needed in this match, was better attacking play from the left side, and to give Pogba a little more freedom to move central in attack at times.