Interesting figures based on a quick look. Taking this tax write-off out of the equation their revenue stream is pretty flat but expenses are going up. You'd expect that for matchday and broadcasting revenue, which won't change much from 2017 to 2018 but commercial income is flat as well, which suggests they've maxed-out their appeal. They're also predicting pretty much the same revenue for 2018 (c£580m) as they recorded in 2017, which confirms that there will be no revenue growth over the full year. But their expenses will be up, including wages and amortisation, so their bottom line might not look so healthy by the year-end.
Another interesting figure is Deferred Revenue, which is money recieved in this financial period that belongs to a future period. So, for example, Adidas may give them £75m in a lump sum but that's over 5 years, so they only put £15m a year through the P&L account and treat the rest as deferred income, to be credited in future years. It would also include season ticket revenue, which is only recorded as actual revenue on a game-by-game basis That's down quite considerably on the prior 6-month period, which probably helps explain why revenue will be flat.