LONDON — Manchester City and Chelsea dramatically abandoned plans to join a breakaway Super League on Tuesday, threatening to implode the project by a group of elite English, Spanish and Italian clubs less than two days after it was announced. Liverpool was also publicly urged to desert the Super League by its players who repeated a tweet first posted by captain Jordan Henderson. “We don’t like it and we don’t want it to happen,” Henderson tweeted. “This is our collective position.” City was the first club to go public with its decision to leave the 12-team project, saying it "has formally enacted the procedures to withdraw from the group developing plans for a European Super League.” Chelsea was preparing documents to tell the Super League it wants out too, a person with knowledge of the decision told The Associated Press. The person spoke on condition of anonymity because Chelsea was yet to send its decision to the organizers of the new, largely closed competition that would sp...