LaLiga president Javier Tebas expects Kylian Mbappe to sign for Real Madrid.
Off contract in June, the PSG star is now free to negotiate Bosman terms with foreign teams.
And Tebas is confident Mbappe will now sign for Real Madrid.
"I think the percentage is very high, but it's my personal opinion," Tebas said at the Madrid Press Awards.
"Much will depend on how much the president of Real Madrid is willing to bet on him. The club must think that (Jude) Bellingham's arrival has already given them a star to pair with another star like Vinicius, but if the player wants to go to Madrid then that will be the case.
"The chances are more than 50%."