In general, you can eat. But now, after six months after they dug it out, it is not recommended. Film The same applies to just boiled potatoes. It is better to drain the water and fill it with boiled broth or milk.
In general, sprouted potatoes are not recommended at all. Let me explain. So, there is a potato bush, there are all sorts of bugs that are very fond of eating greens, and it is in order to survive the bush, tops, fruits, potatoes that they learned to produce solanine, an extremely poisonous alkaloid. As a matter of fact, many nightshades have it. When the tuber is just ripe, there is no solanine in it, but as soon as it begins to germinate, i.e. prepares to go into the tops, the production of solanine begins already in the tuber itself, and it becomes poisonous. It is difficult to get poisoned with sprouted potatoes, but if you try, you can. In the USSR, they somehow bred a potato variety that resisted insects well, but it had to be banned, because it resisted well just because there was a lot of solanine, and even a slightly sprouted, green potato was extremely poisonous.