Saliba has a contract with Arsenal until 2027, and there is currently no strong pressure to sell him. Diomande, on the other hand, is also under contract with Sporting until 2027. However, Sporting is asking for around 80 million euros to let him go.

Arsenal is keeping a close eye on Diomande's situation because he could be a suitable replacement for Saliba if needed. The Gunners are preparing for various scenarios, including the possibility of losing Saliba to another team.

It's worth noting that Diomande's transfer value is quite high, which could impact Arsenal's decision-making process. The club will weigh the costs and benefits before making a move.