Elon Musk faces numerous hurdles if he follows through on his threat to walk away from his purchase of Twitter, according to legal experts, but they say the company might need to renegotiate the deal unless it is ready to fight through costly and protracted litigation.

While a renegotiation might be a quick way to resolve Musk’s dispute with Twitter, such a concession from Twitter would set a troubling precedent for mergers and acquisitions, the experts say.