Alvarez would be a tough fight for Floyd at 154lb only because he is not natural at the weight. He struggled with Oscar and pulled the victory through better conditioning at the second half of the fight, Cotto fight was the first time I have seen him with a bloodied nose (yet Cotto is not a huge light middle). I would have respect for Floyd fighting Saul who is very under rated and is a lot more dangerous than people think he is.