The Catalan giants are under immense financial pressure, and they will have to reduce their wage bill to register their new signings and afford a new contract for Lionel Messi.
Meanwhile, Messi is also expected to sign a new five-year contract.
The departure of Antoine Griezmann will undoubtedly help in that regard. The Frenchman joined the Spanish giants for a fee of over £100 million in 2019, and he is believed to be on significant wages.
The attacker will now return to his former club Atletico Madrid, where he developed into a top-class player.
Meanwhile, Saul has fallen down the pecking order at La Liga Champions Atletico Madrid, and the Spanish champions are keen on selling the player.
The midfielder clearly needs a fresh start, and a move to Barcelona could be ideal for him.
With the likes of Philippe Coutinho and Miralem Pjanic struggling to hold down a regular starting berth, Barcelona needed to bring in a central midfielder who is versatile enough to play in multiple roles, and Saul seems like a perfect fit.