Yes, three day turn around makes it difficult for both sides to make changes.
Clearly, Warner should be dismissed, probably forever, but there is simply no-one to replace him!!! Bancroft is a long way from a decent Test opener, and Harris just doesn't seem to value his wicket. I guess it may be feasible to open with Kawaja, but that is just switching deck chairs on the Titanic. The only other option is to open with Wade, and put Mitch Marsh in at six.
The Aussies may be tempted to rest Cummins, but I hope not. Keeping the three quicks from the Old Trafford may force the Aussies to pick Marsh.
The elephant in the room is Nathan Lyon, bowling very average and with a split spinning finger. Incredibly, he was the only specialist spinner in the squad, so not sure what the selectors will do if he is ruled unfit for the Oval.
For the English, Roy and Buttler are simply not good enough at this level, the English selectors seem to struggle to accept there is a difference between 50 over and Test cricket. With Bairstow struggling, the batting line-up is almost as thin as the Aussies, but of course, they do not have a Smith to come in at four.
Broad has been stupendous, Archer really exciting, but too much on the shoulders of those two. I'd be flabbergasted if Woakes didn't come in at the Oval, Overton didn't look threatening at any stage at Old Trafford. Leach looks like he could be a beauty, I hope they persist with him.