I think it'll be much tougher than some think to come away from there with anything. Obviously I hope I'm wrong.
I think Mourinho will know that he can't match us for a flowing game of football and he can't sit deep and rely on the counter attack (because he doesn't have a huge amount of pace for the breaks plus that's what Pep's style knows how to deal with). He'll recognize that Otamendi and Stones will be under fierce pressure if crowded constantly. So no parked bus IMO.
I think he'll attack us by putting Ibrahimovic and Fellaini up on top of our defenders and pump high balls in over and over. They'll be like Sunderland, Stoke and WestHam (2nd half) rolled into one but with more effect and more belief. It'll be relentless route-1 mucker shit.
Our only hope in that case will be to catch them on the break. But that'll be easier said than done. Especially without Aguero. (Is Sané ready I wonder? His pace might be the key)
Obviously I hope we give them a footballing lesson but it's a very tough challenge. Besides the result I hope there's no serious injuries or bans (Who'd be surprised if Mourinho instructed his feckers to cheat and maim for 90 mins - 100 mins if they are losing).