What? Matip, Grujic, Klavan have been crap and in the case of the second utterly non-existent, and the only one I could remember off the top of my head was Matip, which says it all.
Also the Glazers are penny pinching how, exactly? Sanchez is on wages which put him comfortably top of the highest wage earners in the league and he was signed only 6 months ago. Pogba cost £89m, Lukaku could cost £90m if he reaches all his targets, and £75m at the bare minimum and both of those guys were signed in the last two years.
Compare our spending compared to everyone not named Liverpool and we're hardly miles behind the rest. It's a World Cup year, the transfer market will always be on pause. Remember 2014, where we only had Shaw and Herrera in for months and once the World Cup was over, boom: ADM, Blind, Rojo, and Falcao came in pretty much one after the other.
Have patience.