You have commented that you will graduate after 8 more months (2 more semesters). You will not graduate right after the end of this internship in about 1 week.
Therefore, it is reasonable that the manager won't be able to convert you to a full time employee right now. Normally, a manager will only convert an intern into a full time employee after that intern graduates (and if that intern has all the qualified skills and experiences for the job.)
You can ask your manager now, but he won't be able to give you a concrete and meaningful answer.
Realistically, he can't really promise to hire you or anyone else as a full time employee 8 months from now. No one knows for sure if, 8 months from now, that company will hire more workers or layoff more workers.
So, I would suggest that you maintain a good working relationship with the manager for now. You could apply for another internship in 1 semester. Or, you could stay in school for the last 2 semesters to complete your degree and then apply for a full time position with that company.