The background to this speculation:

A Medium Term Lending Facility (MLF) will mature tomorrow, Friday.

  • 200bn yuan

This will be rolled, the question is at what rate? You'll see from the posts above that the PBOC now has a rate cut on their 'to do' list. Also a cut to the RRR. Citi says this could be tomorrow also:

pboc rrr cut 15 April 2022