Its getting awfully hard to determine what value someone should be. When a club is asking £120mill for a teenager. And even Graelish went for over £100 mill (two years ago, so that's probably £120 mill in today's money)
£50 mill seems paltry for an established player with good ability after the English-national surcharge...
But if you go back a decade, that's the price we sold a world-class (

) striker to Chelsea for and theres plenty of very good talent that can still be had for that price or less .
I sometimes think price is determined by a random number generator.