Their total debt is now around £500m which is £90m higher than it was at the last year end. That cost them £20m in debt servicing costs, compared to £35m last year. This implies they're relying much more on overdrafts than longer term borrowing but it won't be possible to be sure until the full accounts are published.
Their bottom line profit was just over £36m and we should easily beat that thanks to a decent profit on our transfer dealings. Even taking that out of the equation for both teams, we won't be that far short of their profit figure.
As you rightly say, a high turnover is one thing but making sure you have enough cash to cover your operating costs and fund incoming transfers is the most important thing for a football club. That's what nearly killed us in 2008.
The cash position at the end of June should be about as healthy as it will ever be as all season ticket income is in and the bulk of the domestic and European prize money. Some more comes in arc the start of the season and some in January but the the rest of the time a club is living off the fat. It won't have helped being dumped or of the CL & then the EL so early. That alone probably cost them £50m in potential list revenue.