Q: Does this mean the owners have no money?
A: They have money. The issue is the fact that the money needs to come from overseas. Overseas transfers can be tricky as seen with how long it took them t close the deal to buy the club. So, in order to register players immediately, the club needs to obtain bonds from local banks, who are also tricky to deal with because they do not find footballing loans to be profitable/of interest anymore.
Q: What happens to the players?
A: They are Milan players. Nothing changes that. Just that they cannot play for the club in a competitive game till the issue is solved.