Currently Tito should be a big favorite. Anything even remotely close odds would end up costing Vegas big money when people remember that fedormisnt even a top 30 heavyweight.
He went to hell and back against Fucking Fabio, starched out by Bader with one punch, crumbled by Meathead and is just fucking done. Meanwhile CroCop is on a ten fight streak and added an Openweight GrandPrix to his accomplishments. So can age and miles really be an excuse? Compare the guy who was #2/3 when Fedor was 1, and then look at where they are now! He didn't decline as significant as people like to exaggerate, he just had to fight real fights under a sectioned body, against non pro wrestlers or non sideshow attractions. Jaideep Singh was his comeback fight for fucks sake. And every champ he has fought outside of Arvloski was more shopworn than him. It's not about what you have done when it comes to your MMA legacy, it's what are you doing until it's over. Fedor is simply removing himself from any talks about being an ATG. Come at me fanboys I'm ready. Also Tito via tko in less than 15 mins