Michael Saylor proposed a "Bitcoin collection" to Cristiano Ronaldo following Ronaldo's luxury watch launch.Saylor is known for promoting Bitcoin to influential individuals and sees it as a symbol of financial freedom.Ronaldo entered the crypto space in 2022 with his own NFT collection despite facing a $1 billion lawsuit.While interest in NFTs has declined, Saylor remains bullish on Bitcoin and predicts it could reach $13 million.