A lot of people are assuming he made the decision based on managing the risk of COVID. Which is possible and perhaps even probable. But amongst the things we don't know anything about is what was going on with his family at that time. One of the unique elements of the bubble was that players would be separated from their family for an extended period of time - something that won't be the case now with the season.
So that's one of the factors that changed, and perhaps caused his decision to change.
Perhaps he felt he could not be away from his family for that length of time.
Again - lots we don't know.
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