According to Diario Gol, Mina is not at the level required for approval from Messi.
That apparently means the Argentine wants him to 'pack his bags' and go out on loan for at least a year.
In reference to Mina, Messi is even said to have told Barcelona team-mates: "Let him go to Girona."
It is claimed that Valverde has been disappointed by Mina since his arrival too.
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Lionel Messi wants Yerry Mina to leave Barcelona on loan to continue his development
Messi scores sensational goals in Barcelona training
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Yerry Mina joined Barcelona from Palmeiras during the January transfer window
And, like Messi, he'd be keen for the defender to head out on loan to continue his development.
However, Barcelona will not leave themselves short of options at the back.
Josep Maria Bartomeu is planning to bring in a senior star to replace Thomas Vermaelen, who's expected to leave.
While Barcelona B's best-performing centre-back will be promoted and become cover for the first-team.