You are correct.
Footballers are assets of the club.
Where however it does show is in a cashflow statement. This is more important to the board members.
The players are treated as intangible assets on the P&L with a straight line amortisation over the period of their contracts, all the info is freely available on Companies House's website, you used to have to pay for this but it is now free for any info on any company, this link should go to the filed accounts,
https://beta.companieshouse.gov.uk/company/00031014/filing-history

