重返欧洲！官方：41岁巴西中卫蒂亚戈·席尔瓦自由身加盟波尔图（官方宣布：41岁巴西中卫蒂亚戈·席尔瓦以自由身签约波尔图，重返欧洲赛场）

Analyzing contract reporting

I want to make sure I'm not stating unknown contract terms, keeping my analysis balanced. No need for unnecessary details or file edits. A concise approach seems best, possibly with bullet points. Since this is for a news piece, I could create a short article with a collaborative tone.

I'll include an immediate news brief with a title, key facts, and background. I’ll avoid fabricating quotes by using placeholders for undisclosed contract details or stating that specifics have not been revealed officially. Misinformation could be risky, so I'll be cautious.Crafting a concise news piece

I'm aiming to create a clear and informative report. I should include a headline in Chinese and core points like age, status, previous club experience, and Champions League involvement.

The background will cover their career history with teams like Milan, Paris, Chelsea, and Fluminense, along with national honors. I’ll also touch on tactical significance, fitness management, and registration details for the Portuguese league.

For the structure, I’ll write a short paragraph followed by bullet points, ensuring to keep everything concise and well-organized. The final title might be: 重返欧洲！41岁蒂亚戈·席尔瓦自由身加盟波尔图, with relevant details bulleted for clarity.