With most transfer fees paid in instalments, I think we could do some damage this summer. 50 ish million pumped in plus sales could get us towards 150m on transfer funds. That's 3 world class players.
The phrase "world class" is used too much. The problem with the modern market is there's a surplus of money but a finite amount of talent, so inevitably large fees were being spent on players who weren't worth it and it's skewed people's perceptions of what world class actually is. As a rule 50m doesn't get you a world class player these days.