As per Nikkei Asian Review, Japanese PM Abe Adviser Hamada has reportedly said there is enough room for further monetary easing in Japan.  

Koichi Hamada sais, “Additional easing such as deepening negative rates or expanding Japanese government bond purchases is a possibility, though I don't know if it'll come at the September meeting or in October or later”.

A Bloomberg survey released earlier this week showed a slim majority expecting BOJ to expand monetary stimulus next week. Markets also see BOJ trimming long duration bond purchases.

Hamada also remains in favor of foreign QE, which “should also weaken the Yen", he said.