"Actually, I want Cain," Dos Santos said. "I won the first, he did a good job in the second. I think the third fight has to happen. He is the champion and I want to fight him. I know there are people in the queue, Bigfoot and Overeem are. If I have to meet someone before that rematch with Velasquez, I'll cope. But what I really want is Cain now."
Dos Santos added that he wasn't in the proper mental state when he fought Velasquez at UFC 155.
"Really was my head," Dos Santos said. "I had some personal things going on, a bit of my attention was lacking because of it. And another thing. Soon after the fight I went to the hospital and had a scan, which showed my creatine was too high. The normal level is up to 300, mine was in 1400. I also had trouble in the urine and kidneys."
Dos Santos said his doctors told him that he over-trained heading into the bout.
"The explanation of the doctors is that I pushed over the line, I over trained, and problems could have happened even before the fight... I was so good that I ended up crossing the line," Dos Santos said. "That was the explanation of doctors. Mine is that I was not good with my head, was having personal problems and did not go well mentally in the fight."
Dos Santos explained that he will make sure he trains properly as he moves forward in his career.
"Going forward I will be more careful, it will take my body to the limit all the time," Dos Santos explained. "I need to know how my body is reacting to what I am doing. We need to be a bit more professional about it. I will do tests during preparation. This fight also taught me that we have to be stronger with the head, think things strategy and better monitor the tactical part."