Read its a wee bit difficult as Betis have some sort of deal with Barca.
Not sure how it works tho.
This mate.
On 31 January 2019, Atlético announced the transfer of Emerson to FC Barcelona, effective as of July 2019, for €12.7 million.The deal consisted of a joint financial operation between Barcelona and fellow La Liga side Real Betis, in which each club paid half of the transfer fee and retained a percentage of Emerson's economic rights. He was to become a Betis player in July 2019, with Barcelona holding the option of reacquiring him for €6 million in 2021.He initially joined Betis on loan from Atlético for the remainder of the 2018–19 season, during which period he made seven appearances for the club.