Here is the list of 10 most lucrative shirt sponsorship deals in world Real Madrid are also in the process of negotiating a new deal which is. Official Website of Real Madrid with detailed information about the current Real Madrid sponsors. News · Codere · Mahou · MMT Seguros. Real Madrid have a €1bn deal over years (Image: Real Madrid) Barcelona have the biggest kit deal in history (Image: AFP). The sponsorship is dwarfed by the £m a-year-deal rivals Barcelona have with American.