This has put him in a tough situation... He has to fight Khan or Pacquiao to retain any credibility he has left as a p4p boxer in the eyes of the fans. He's going to take a lot of harsh criticism so it will put him in a tight corner where he might not be able to escape from. I think he will duck both fighters to fight Keith ''One Time'' Thurman. Who is tailor made for him. He will try to sell it as a legit fight knowing it will be like Mayweather vs Maidana 2. A main selling point would be Keith's an undefeated fighter. Keith needs way more seasoning before he fights Floyd but Floyd will pick him as he's the easiest to beat of the three.
I agree Thurman is the easiest of the 3 for one reason he is much, much slower then pac and khan, Floyd will fight a power puncher any day over a very fast fighter with average power.