He most likely has some type of infection and needs to consult a doctor. I would inform him of this if possible.

Did he have phimosis?

He didn't say and I didn't ask.
Looking back know,he said he get's very sensitive when he cum's.
When a client has finished, I usually clean them up, with baby wipes, before offering them the use of the bathroom to freshen up.
On this occasion, I handed him the packet of wipes and said help yourself, to how ever much you need.