Although this maybe heart ruling head, Craigie I'm in agreement with you that the contract has been terminated early
The wording on my email was
" This email is to inform you that after two seasons working together with Celtic FC, our partnership has now come to an end and we are no longer contracted with the club."
The announcement of the 2 year contract was 23 October 2017 (not 2 seasons)
Announced as follows
"THE award-winning online gaming operator, Mr Green, has partnered with Celtic in a two-year deal which will see Mr Green as the club's Official Casino Partner"
http://www.celticfc.net/news/13407
Nearly 4 months before the end of the 2 years , strange time frame, even stranger that there is no official announcement.
It maybe my heart ruling my head, I'm normally a pessimistic person, but I have strange feeling this might be a small crack in the Dam appearing.