Depends on whether it has a phono input. Normally all marantz integrated amps have some sort of phono input right down from the entry level one. To be sure, could you please post a photo of the back of the amp?
Even if he is, I am pretty sure he would have already bought a preamp or something.
What is to be observed is nobody responded to the query that time.
More FMs should come forward to help FMs with their queries especially newbies (applies to me too).
That's what will make the community stronger.