1. **Analyze the Request:** * **Keyword:** "Diego Costa Goalkeeper Transfer" (Note: The context provided clearly refers to "Diogo Costa" from FC Porto, not "Diego Costa" the former Chelsea striker. I need to correct this likely typo in the user's keyword while still addressing the user's intent. I will focus on Diogo Costa but acknowledge the name overlap if necessary, or simply write about the correct player as the context dictates. The context says "Diogo", "FC Porto", "Chelsea", "EmilianoMartinez" (comparison?), "Erik ten Hag" (Manchester United context). The keyword "Diego Costa Goalkeeper Transfer" is almost certainly a confusion between Diego Costa (Striker) and Diogo Costa (Goalkeeper). I will write about Diogo Costa, the FC Porto goalkeeper, as per the context provided.) * **Context:** * Diogo (Costa). * 60 million euro offer for FC Porto. * Chelsea have officially approached FC Porto. * Emiliano Martinez (likely a comparison or rival target). * Erik ten Hag (Manchester United context, possession-based style). * Social tags: #cfc, #chelsea, #diogocosta, #xabialonso, etc. * **Requirements:** 600-900 words, natural headings, no unsupported claims, safe HTML tags only (h2, h3, p, ul, ol, li, strong, em), SEO-friendly, no markdown fences. 2. **Determine the Angle:** * The article is about the transfer rumors surrounding Diogo Costa (FC Porto). * Key interested parties: Chelsea, Manchester United (implied by Ten Hag context). * Price point: ~60 million euros. * Style of play: Possession-based (Ten Hag), which fits a goalkeeper good with their feet. * I need to clarify that this is Diogo Costa, not Diego Costa, to ensure the article is factual and useful, even though the prompt used "Diego". 3. **Drafting Structure:** * **H1 (implied):** Diogo Costa Transfer Saga: Chelsea and United Battle for Porto Star * **Introduction:** Hook the reader. Mention the high stakes (60m Euro). Mention the confusion (Diego vs. Diogo) briefly to clear the air, then focus on the Porto keeper. * **H2: The 60 Million Euro Valuation:** Discuss the financial aspect. Porto's stance. The "official approach" by Chelsea. * **H2: Chelsea's Goalkeeper Search:** Why do they want him? (Replacing Kepa/Silva issues?). Link to the "official approach" context. * **H2: Manchester United and Erik ten Hag:** Discuss Ten Hag's possession style. How Diogo fits that. Comparison to Emiliano Martinez (who is a different type of keeper, maybe a rival target for another club or just a benchmark). * **H2: Playing Style and Attributes:** Why is he highly rated? Distribution, shot-stopping. * **H2: The Competition:** Mention the market interest. * **Conclusion:** Summary of the situation. 4. **Refining Content & Tone:** * *Correction:* The user asked for "Diego Costa Goalkeeper Transfer". Diego Costa is a striker. Diogo Costa is a goalkeeper. Writing an article about Diego Costa becoming a goalkeeper would be hallucination/fake news. Writing an article about Diogo Costa is the only factual path. I will use the term "Diogo Costa" in the text but ensure the SEO intent (goalkeeper transfer) is met. I will treat the keyword as a typo for "Diogo Costa". * *Context Check:* "Chelsea have officially approached FC Porto about signing highly-rated [Diogo Costa]." "60 million euro offer." "Erik ten Hag... possession based style." 5. **Writing the Content (Iterative process):** * *Intro:* Start with the buzz around FC Porto's goalkeeper. Acknowledge the 60m price tag. Mention the interest from Premier League giants. * *Section 1 (Chelsea