Should have sold Coutinho, who isn't with the 130m being offered. We could have bought Lamar who wanted to play for us, and we could have bought a few more defenders
We had the money to buy defenders, we didn't have to sell Coutinho, we were trying to buy VvD without needing to sell Coutinho.
The reason we didn't buy a CB defender was Klopp decided it was VvD or no one, which was a bad decision as it has made us really weak defensively.
What we should have done is bought a decent available CB early on, like Michael Kean or De Vrij, which would have cost us £20-30 million, then go for VvD, if it doesn't come off, we still have a decent CB coming in, we were always going to sell Sakho, so that would have paid for him.
If we managed to get VvD it would really have strengthened us, then Klavan would have been pushed to 4th or 5th choice, with the new CB challenging Matip/Lovren for a starting place, if VvD came in he'd have a starting place improving the defence.