According to this list it’s the top transfer by a mile. Even when adjusted for inflation (as someone mentioned) only the Makelele transfer comes close, with £18m in 2003 being roughly £30m now.
https://www.givemesport.com/1819920-ronaldo-wood-trippier-who-are-the-most-expensive-premier-league-players-over-30
Edit: it’s also bigger than the biggest sale from a Premier League club for a player over 30, with Arnautovic’s sale from West Ham holding that record at £22m.
https://www.givemesport.com/1819920-ronaldo-wood-trippier-who-are-the-most-expensive-premier-league-players-over-30
Edit: it’s also bigger than the biggest sale from a Premier League club for a player over 30, with Arnautovic’s sale from West Ham holding that record at £22m.