Honestly I expect some of our bench players to step up to occasions like this when needed. Pogba, Giac, even Isla and Padoin should be able to do the job.
I was re-watching our epic 1-6 thrashing of milan of 1997 the other day, and supposedly it was 3 days before our CL semifinal against Ajax, Lippi rested alot of starters (Dechamp, Conte, Del Piero, Torrichelli etc.) yet youngsters like Tacchinardi, Amoruso, and guys like Dimas and Lombardo, looked miles better than Sacchi's starters.
Granted that scoreline was a bit flattering, but nevertheless our players put up a great performance that day, and I don't think our current bench players are worse than the aforementioned guys. So I expect them to get an easy draw or a narrow win against merda.