Re: Human rights
Paragraph 2 of Article 5 of the European Convention on Human Rights says:
2. Everyone who is arrested shall be informed promptly, in a language which he understands, of the reasons for his arrest and of any charge against him.
This is re-iterated in Paragraph 3 of Article 6:
3.Everyone charged with a criminal offence has the following minimum rights:
(a) to be informed promptly, in a language which he understands and in detail, of the nature and cause of the accusation against him;
Additionally Article 4 of Protocol 7 prohibits the re-trial of anyone who has already been finally acquitted or convicted of a particular offence.
So, it doesn't matter whether you struggle to comprehend these rights or not, they are what he is entitled to.