Yes, absolutely! If it comes through in his pocket it could be exchanged for units.

Also, I would like to add that I understand that some characters are simply more enjoyable to play when they are financially comfortable. I don't have any objections to characters coming into large amounts of money in the Quarantine, so if that is the case with Nico, where you would prefer him to have a large quantity of accessible money, I can think up some options. Please hit me up via PM if this is the case and we can figure something out!