I tend to look at in proportion to the top fees at the time rather than inflation.
Back in 2007 you had Chelsea buying Drogba for about 24 mill I think, Torres went to Liverpool for something similar. United obviously paid more than that for Rooney, Berbatov etc. So Yakubu wasn’t really anywhere near the fees for the top end of strikers and we had a completely unopposed run at him.
Nowadays we wouldn’t even have a chance of buying a striker as good as Yakubu. In an era where Chelsea are buying Liam Delap you’ve got to search hard for any striking talent whatsoever and most probably take a gamble. You’d be paying 70-80 mill for a prime Yakubu now, except you wouldn’t because City or Chelsea would have bought him already.
Yeah granted, wasn't at elite/highest end of the market but we still had to folk out a club record bid for a player at Middlesbrough, who was on strike/wasn't turning up to training - because he was 'proven' in the Prem. I think that premium existed back then.
If we signed someone for £60m now, in 20 years from now, we could say "well Wirtz was £126m" or whatever it is.
Agree we'd be paying Mbeumo type fee, for a Yakubu now. But I think the £11m odd for Yakubu in 2007, is the same £60-70m now.