Azpilicueta's contract expires at the end of the season and we haven't yet had any word about the Spaniard's plans to renew his contract with the Blues.
In an interview with the Chelsea website, the captain hinted that he wanted to stay at the club, "I can't say anything more, I'm really committed, there's a lot to do in the coming months and hopefully we can have a really good season." "
However, whether he leaves could affect the Sevilla players Chelsea signed in the January or summer transfer window. The club has ties to both Kunde and Carlos.
If Azpilicueta ends up leaving, Kunde may be the reason, because Kunde's characteristic is that he can play both centre-back and right-back, a trait that is beneficial to either side.
If that happens, injuries this season have taught us that adaptability is crucial and could be the key to winning a game. The similarities between the two players will also give Tuchel a good idea of what he can do from him.
On the other hand, there are more traditional Costa options. Tall and dominant, he's Chelsea-style and the kind of defender the club wants.
He was imposing and could hold his place in the back. Rudiger, who is 28, also has experience, and Chelsea could lose that experience after his departure, costa could be a good replacement.
Neither is cheap, with Conde worth around £54m and Costa worth around £40m. It's certainly an investment, and it may depend on whether Captain Azpi leaves or stays.
But if the club wants to do something in January, time is running out. With just over a week to go before the deal closes, Chelsea will need to move quickly as the two players are already linked to other clubs.
Or they can wait for the situation to develop, see how Azpilicueta performs in the summer, and hone what is their best goal. Either way, they're a great option for Chelsea to take advantage of.