Won't see either of them for a while then based on previous performances lol.
In all seriousness, I can't wait to see Sanchez in this more attacking line up. I think he will fit in perfectly. I'm not so sure where Lukaku gos from here though. He's hardly dynamic.
I think both will perform better under Solskjaer. Sanchez will play closer to the opponents penalty area where he will be more effective. He was far too deep under Mourinho. Lukaku will surprise a few. He was misused by Mourinho; he is better than just a target man.