For what its worth my feeling and no evidence just a feeling , Liverpool £50 million
Like you I have wondered if a Liverpool connection could come into play. Liverpool buy him say and loan him back to us until they want him as a first team starter. Salah, Mane and Firmino have been together for coming up for three seasons (?), another one might be its natural life span so a ready made replacement for one of them could suit Liverpool. Your feeling of £50M would suit us as supporters, would suit Messrs Gerrard and Wilson assuming a decent chunk of funds is made available for new players, would suit Alfie through bigger wage packet and a route into the top end of the EPL and give us him for another period.
Like you I have no evidence but it does have a certain ‘all parties win’ elegance.