A muture doe has a wide pelvis for bearing young making their hind tracks appear outside the front ones. A bucks rear tracks are almost always inside his front ones since he has a broader shoulder than his pelvis.
Since you state the track is a little inside the front one I would guess Buck.

Here is a quote I found In Iowa Game & Fish Magazine that supports my statement.

"To narrow down whether the tracks you're looking at are actually those of a buck or doe is fairly easy. Because a mature doe is narrower in the chest when compared to the hind end, her rear tracks are slightly outside of her front tracks. Bucks' tracks are just the opposite, which means he's typically wider in the chest than at the rear end, where his rear tracks are slightly inside the front tracks"