I think the placenta is a two way task between the fetus and the uterus, but we know from the limited animal experiments that no, the male physiology can't support a pregnancy, even when a uterus is implanted.
The Chinese rat experiment relied on a female rat being attached to the male rat's blood supply, and in addition, that female rat needed to be pregnant at the same time that the male rat's implanted uterus was carrying a pregnancy.
No male rats became pregnant when attached to a non-pregnant female rat.
I think you could make an argument that the male rat wasn't actually ever pregnant. Instead, that rat's body became an extension of the female rat and she supported pregnancies in two uteri.