Main European football leagues are not financially sustainable. - According to a study by the consulting firm, A.T. Kearney, it is essential that European football leagues change their economic structure if they want to survive. The A. T. Kearney study covered the economic results of the top football leagues - German Bundesliga, the French Ligue 1, the English Premier League, the Spanish Primera División and the Italian Serie A. The model on which the German Bundesliga is based is the most viable, followed by the British Premier League (mainly due to the excellent sporting performance of these two clubs) and the French Ligue 1. The Spanish and Italian leagues come last. The German league is profitable with positive assets of +2.1% while the French league has +1% and the Premier League -5%, the Spanish league -7% and the Italian league -12%. In 2010, amounts paid out for the transfer of players, for all five leagues, reached €11.2 billion (€3.2 billion for the UK, €2.5 billion for Spain, €2.4 billion for Italy, €1.6 billion for Germany, and €1.5 billion for France), A.T. Kearney underlines. Another study by the same firm covered the monetary value of football teams and confirms the trend underlined in the first study - that the leagues which invest the most money are those which have the best sporting performance. Thus, Spain - world champion - ranks first with an estimated value of €650 million. In terms of effectiveness of national teams, calculated according to an index based on the ratio between sports performance at the World Cup 2010 and the value of the team in millions of euro, the young team from Ghana ranked first. With a value of only €58.5 million, it is the only African team to have come successfully through the first round and to deliver a very good performance despite low investment. (I.L./transl.jl)