I totally agree with you, friend! Juventus desperately needs to make some targeted signings to improve the team. Jonathan David is a great signing, but he can't lift the team on his own! In my opinion, they should sell Vlahovic and cash in as much as possible, then buy a midfielder and a striker.
That's obvious Juve needs another forward to add more depth on their ST position. The only problem is how can they find a buyer for Vlahovic? Not many teams are interesting in acquire a player with more than 400k euro weekly salary. Unless Vlahovic can cut his salary, believe me, none will be singning him.