Barcelona have reached an agreement with Inter for the signature of Brazilian left-back Maxwell for a fee which could rise to 5million euros.
The 27-year-old is expected to arrive at the Spanish and European champions on a reported five-year contract.
Maxwell enjoyed a successful three-season spell at Inter where he won a hat-trick of Serie A titles.
The Brazilian has been in pre-season training with his Nerazzurri team-mates in Los Angeles ahead of the new campaign.
The former Cruzeiro and Ajax player will now return to Europe to hold talks with Barca officials ahead of his proposed switch to Spain.
"After meeting with [coach] Jose Mourinho and the coaching staff, Maxwell has left the hotel premises," read a statement on Inter's official website.
"He will return to Europe to complete the paperwork for his transfer to Barcelona."