Olmo left La Masia when he was only 16 years old and is said to be open to moving back to Spain.

All presidential candidates at Barcelona have former La Masia player Dani Olmo as their transfer target, Diario AS report.
The Catalans have been interested in the Spaniard for several months and even tried to sign him last winter but couldn’t find an agreement with Dinamo Zagreb.

The 22-year-old is open to moving back to La Liga as he was close to reaching an agreement with Atletico Madrid in the past.
Olmo currently plays for RB Leipzig and has established himself as a regular starter; he has registered 4 assists in 11 games so far this term.
Dani is a versatile player that can be used as an attacking midfielder, left or right winger as well as a centre-forward.
We rate this rumour three stars because we’re still to hear any of the candidates mention Olmo as part of their plans; still, he has been linked with Barca for quite a while now.

All Barca presidential candidates see Dani Olmo as their priority transfer target