Juan Manuel Marquez Next Fight: Robert Guerrero Bout Possible After Amir Khan Agrees To Face Devon Alexander?

Juan Manuel Marquez is reportedly considering retirement due to a lack of intriguing opponents. Marquez has said he wants to fight for a fifth world title, and has his eyes on IBF welterweight champion Kell Brook, but the 41-year-old fighter also said he has to see how his body responds to training.