We also wanted Jack Grealish in 2018 who did want to come but we played silly buggers and messed it up.One of many fans misunderstandings of transfer windows is that players have 'agency' in other words they can choose to go to a club or not - and its not necessarily always about money either. BTW, that's not aimed at you, just a general comment.
As an example - the 'famous' 'no signings' 2018 window. Spurs tried to sign Frenkie de Jong that summer but he didn't want to join Spurs for his own reasons despite the money being available. Frenkie de Jong admits he nearly joined Tottenham before Barcelona move
My point was though its difficult to hammer the managers from those times, whether Poch, Redknapp even AVB because they rarely got what they wanted and had to make do and mend.