His name is Gabriel Leung, dean of hong kong's school of medicine.

https://www.scmp.com/news/hong-kong/health-environment/artic...

his live interview: https://www.youtube.com/watch?v=aYyH4N8VXvA

https://www.tellerreport.com/news/2020-01-27---viruses--hong...

He expects 150k infections daily at some point: https://www.ccn.com/dramatic-hong-kong-data-predicts-coronav...

Here's another source which mentions the 44K number. The previous comment might have got the name wrong.

http://www.cidrap.umn.edu/news-perspective/2020/01/experts-n...