Porto is preparing for life after Diogo Costa, with the player being touted for a transfer to Chelsea. After keeping 26 clean sheets in 53 matches this season, and conceding just 13 league goals in 31 appearances, Diogo Costa heads into the World Cup with significant momentum. According to Record, Diogo Costa is regarded as one of the most valuable goalkeepers at the World Cup, with a valuation of €40m. But that valuation may not remain there for long. The Portuguese newspaper argues that the World Cup offers another major shop window for the Porto goalkeeper. Diogo Costa has previous experience of seeing his value rise after major international competitions. The report points out that his market valuation reached €45m following the 2022 World Cup and Euro 2024. Now, with Portugal among the contenders and Costa entering the competition in excellent form, there is an expectation inside Porto that another strong tournament could further strengthen his position in the market. André Villas-Boas, the club's president, has previously described Diogo Costa as a highly sought-after player. PSG are again mentioned among the clubs keeping tabs on the Portugal international, underlining that Chelsea would not necessarily have a clear run if a transfer battle develops. Porto appear to be preparing for every scenario, with the club's hierarchy closely monitoring how Diogo Costa's valuation develops during the competition. This will hardly be welcome news for Chelsea, who continue to be linked with elite goalkeeping options. Liverpool had previously been mentioned as another logical destination, but Alisson Becker's recent confirmation that he intends to remain at Anfield removes much of the immediate need on Merseyside. That leaves Chelsea standing out more clearly among the clubs that could realistically pursue Costa.