Pellegrini was thrilled to see Lanzini back on the pitch following a long-term knee injury as his squad returns closer to full strength.
He said: “Of course, not only Manuel Lanzini but Marko Arnautovic is getting fit again and Samir Nasri will be very important. Next week Fabian Balbuena could be back again, so of course I never complained when we didn't have the results but it's very difficult to play with eight or nine injured players.
“Marko tried tonight to do his best. Unfortunately for him their goalkeeper made a very good save, he also assisted the goal for Antonio so I think he will return week-by-week to his normal performance."