Chelsea are not the greatest at defending that scenario but they can counter-attack. Villa need to gamble.
Mason Mount and Billy Gilmour could stay in the team, Tammy Abraham will be fit and fresh, and Olivier Giroud will want to do something, but there is nothing at the end of the summer to play for, so it is a sprint finish. I can see Chelsea picking Villa off.
There is absolutely nothing inspiring either up front or on the wings. Grealish can pick a pass, but you need people to work and run in behind.
McGinn can do that, and so can Conor Hourihane. He works well with Grealish. Get them two to make the runs in behind and it will give them a chance.