However, there will be the issue of securing a work permit for Sosa, who has only just made the breakthrough for River.
Indeed, the 20-year-old has only made five first-team appearances for his current club, meaning that sorting out a work permit would be very, very difficult.
However, it would be fair to say that the news has not gone down well with the Everton supporters – their issue is not with Sosa himself but rather with signing a player who might not actually ever turn out for the club.
It is a tough one and it will be very interesting to see how the situation develops.
A selection of the Twitter reaction from the Everton fans can be seen below:
Work permit ??
— Joe Ainscough (@JAinscough7) June 3, 2019
So we expect him to sign for someone else
— The Street End! Block GT7 (@andyc192) June 3, 2019
We won’t spend £13m on someone who will be loaned out
— ??? (@chrisjhocking22) June 3, 2019
Got Davy Klassen written all over this.
— The King in Yellow (@LakeofHali) June 3, 2019
More waste of money
— Mark Bowden (@MarkBowden19) June 4, 2019
Cant wait for him to be on loan at red bull salzburg for 5 years then sold to bayern ?
— mogsy (@mogs157) June 3, 2019