One of the most highly sought after 'keepers in the game. We've had goalkeeping issues for most of this decade.
Yep, bring him in. 4 good games from Karius is nice but not enough to convince me that we shouldn't be looking at this kind of deal just yet. If he carries on like this for the rest of the season, maybe we can look at giving him the role long term, if not, it's smart to have done the leg work on this early.
As for the fee, I'm not fussed. Better to spend big on certain targets than evenly spread out money on a load of shite (Everton say hello). Keane, Pickford and Klassen cost a bit more than VVD, who got better value? Lindelof cost half of Van Dijk...
Same with Alisson. If he's the best out there, bring him in. We don't need loads of players, we just need a few great ones. Van Dijk and Keita signalled a shift towards that, getting the best available in rather than settling for someone decent. Not every transfer will be like that (unlike at City, who would still have spent waaaaay more than us if this transfer comes off), still room for a Robertson instead of Mendy for example, but we can afford to have a splurge here and there.