The document discusses the financial impacts of the COVID-19 pandemic on top football clubs in Europe. It estimates that clubs in the Deloitte Football Money League missed out on over €2 billion in revenue over the 2019/20 and 2020/21 seasons due to factors like the absence of fans at matches and rebates to broadcasters. Several clubs such as Barcelona, Real Madrid, and Bayern Munich saw commercial revenue increases through new sponsorship and merchandising deals, but matchday and broadcast revenue declined significantly without fans in stadiums. Overall, the pandemic had large negative financial impacts on Europe's biggest clubs in the 2019/20 and 2020/21 seasons.