Sport says Barça are offering Mbuyamba to Juve for Senegal striker Kaly Sené. But Mbuyamba will leave Camp Nou in June and won't have his contract renewed, so other alternatives are being discussed.
He has trained with Barça's first team but there wasn't space for him in the B team next season, with Juve among the teams interested in him.
Barça had put Mbuyamba's name on the table as part of a swap deal for Kaly Sene, the Senegal forward who can play wide or through the middle.
This season, in the UEFA Youth League, the league and the cup, Kaly Sene has played 28 times, scoring nine goals and setting up four more. He has a deal until 2022.