Is a possible Paul McCartney concert being moved from Candlestick to Levi's Stadium?

The San Francisco Chronicle reports what was supposed to be a farewell concert at Candlestick Park is now being considered for an opening event at the 49ers new stadium in Santa Clara.  

The idea was to say goodbye to the ballpark where the Beatles played their final paid concert in 1966.

The change of venue would essentially yank the rug out from under the Candlestick sendoff celebration.  

Candlestick officials learned of the possible change when McCartney's concert promoter accidentally let slip that they had visited Levi's Stadium.