Former Netherlands international
The club announced the deal in a statement which read: "Botafogo have formalised a contract with the Dutch midfielder
"Seedorf has signed a deal for two years with Botafogo."
It went on: "It is the biggest contract for a foreigner made by a Brazilian football club."
The Brazilian football federation says striker Michael has been dropped from the Under-20 national team for testing positive for cocaine after a match last month.