Concerned is a big word, I quite frankly don't give a fuck, but I have noticed his approach to striking changed quite a bit. He mentioned on multiple occasions that he cleaned up his style by teaming up with his old boxing coach and now "sits down on his shots" more than he used to. I've noticed by watching some of his footage that he is much more flat footed and keeps his hands glued to his chin, a classic english boxing style, the opposite to what his approach used to be. McGregor used to fight with his hands down, stance wide, bouncing in and out of range like a TKD fighter. It was unorthodox, but effective for him. Ever since the Mayweather loss, he seems to have renounced his old style. I don't think changing the recipe mid-career, after a long lay off, is a good strategy (Ex: Narrow Stance Penn). A low stance might be more effective against/for wrestling, but vulnerable to Muay Thai. I'm curious to see how he looks tomorrow night. I'm out, one love!