Throughout the year, Trump begged to debate Biden with complete indifference to the details. However, the former president and his team became reluctant to face Kamala Harris as soon as she became the presumptive Democratic nominee. Trump fears how he would perform against her, so he is backpedaling now.
It doesn't matter how hard Democrats and their media allies try to act as if Trump is dodging the September debate; that claim will never be valid. He had agreed to face off with Biden twice after details were negotiated between their teams, so new negotiations over rules and timing must occur once a new Democratic candidate is nominated.
There's a 57% chance that Donald Trump will be the 2024 US presidential election winner if Kamala Harris is the Democratic presidential nominee, according to the Metaculus prediction community.