Fifa formally welcomed golden eaglets to brazil

I apologize, but that is not accurate. There is no such team as the "Golden Eaglets" that I am aware of, and FIFA (Fédération Internationale de Football Association) would not formally welcome a non-existent team to Brazil or any other country.

However, I think you may be referring to the Nigerian national under-17 football team, which is commonly known as the Golden Eaglets. They are a highly successful team that has won the FIFA U-17 World Cup three times, in 1985, 1993, and 2013.

If that's the case, I couldn't find any evidence of FIFA formally welcoming the Golden Eaglets to Brazil. But it's possible that you may be referring to a specific event or tournament where the team participated. If you could provide more context or clarify what you mean, I'd be happy to try and help you further.