Technically Marquez is 0-2-1 vs. Pacquiao.
Most people believe Marquez at worst should be 1-1-1 and at best 3-0. I don’t know if anyone was clamoring for a 4th fight, but once Miguel Cotto turned down Pacquiao, his choices were limited to Timothy Bradley and JMM.
Even though Bradley beat Pacquiao in controversial fashion, it appears he has no interest in avenging that loss.
According to JMM’s manager the deal is 95% done, but no contract has been signed.