The Brazilian has joined on a three-year contract, with Barca confirming the deal this morning.
Emerson signed a five-year contract with Barça in 2019, although he was loaned for two seasons to Betis.
There is now a belief, reports AS, that Barca have ruled out selling Emerson this summer with Sergi Roberto now planning to depart. He would also act as direct competition for USA fullback Sergino Dest.
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