Have a look at the current male model next to the female one:
As you can see, the male has a lower geometry resolution and, in comparison, unclean looking textures. We want to bring the male to the quality standards of the female.
The male is supposed to wear the same unisex armor pieces as the female (which were originally modeled on top of a male body anyway). Those don't need to be redone, you can simply create a model that fits into them. Here's the female (in an earlier iteration of her modeling) wearing some armor (which has also had some texture corrections applied to it by now):
You will receive the armor pieces together with the female model as a reference when you assign to this. If you feel like you need to change the existing armor (e.g. in the torso area) ask about it beforehand so that we can figure out whether this would interfer with any plans of reusing the armor pieces on a technical level, too. (I don't know if this is planned or possible, but it would be nice if we had the option.) Polygon count and texture resolution(s) should also be in line with the assets you'll receive.
Below the armor, the male should also wear the same clothes as the female, just differently tailored towards his anatomical needs.
When it comes to the face of the human, you have all artistic freedom (unfortunately there is no concept to follow either), with a few things to keep in mind:
He is a clone soldier. Therefor, the face shouldn't have any unique traits such as scars.
The hair should be short, so that it fits beneath a helmet (which is another armor piece).
For more variety, it would be nice if he didn't look like the twin of his female counterpart (→ some deviaton from blue eyes, blonde hair and fair skin).
He should look appropriately tough and focused. Like he's going to fight a bunch of aliens soon!
In addition to this, you might also want to read the female's concept and model threads to get some more ideas.