Blues ready £51m summer goalkeeper bid

Diogo Costa to Chelsea: Chelsea match Porto release clause as Xabi Alonso demands elite upgrade on Robert Sanchez

Diogo Costa to Chelsea: Forget the usual summer-long transfer sagas that drag on until deadline day; newly appointed Chelsea manager Xabi Alonso wants his business done now. At the very top of his shopping list sits Porto captain Diogo Costa, and the hierarchy in West London is already assembling a formal financial package to secure the Portuguese international.

Portuguese outlet Correio da Manhã, via Sport Witness, reports that Chelsea are aggressively pushing ahead with talks. They want their man. Alonso has reportedly made it clear to the board that an immediate upgrade on Robert Sanchez is non-negotiable if the club wants to challenge for silverware again. While the recruitment team initially hoped to negotiate around a baseline figure of €40m (£34m), Porto are dug in. They are refusing to budge. If Chelsea want him, they must pay the €60m (£51m) release clause. With heavyweights like Paris Saint-Germain and Bayern Munich watching closely from the wings, the Blues cannot afford to dither.

The statistics that exposed Robert Sanchez

Look at the numbers from the 2025/26 campaign, and the desperation makes perfect sense. Sanchez managed a dismal nine clean sheets in 35 matches. Costa? He kept 19 shutouts in 33 Liga Portugal games. The contrast is stark, almost embarrassing for a club with Chelsea’s ambitions.

The differences in style and execution are even more glaring when you look at how both men distribute the ball. Modern managers demand a keeper who can play under pressure. Alonso certainly does. Sanchez crumbled too often last year, finishing the season with a poor 66.7% pass accuracy. Costa, fresh off a world-class showing for Portugal at the 2026 World Cup, operated at a precise 76.9% distribution rate. He also stopped 80% of the shots he faced, conceding just 15 league goals all year while managing 1.86 saves per 90 compared to the 2.90 made by Sanchez in a far busier Chelsea penalty box.

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Scorzo’s take: Why the £51m fee is necessary

Paying the full release clause is a massive investment, but it fixes a glaring vulnerability that has plagued the squad for too long. Sanchez lacks the composure required for elite build-up play. Triggering the clause for a 26-year-old at the peak of his powers ends the debate. It stops the bleeding in possession. Chelsea’s intent is clear, and matching Porto’s valuation sends a direct message to the rest of the Premier League.