According to Diario SPORT, the clubs are in intense talks with Inter adopting an ‘uncompromising’ stance with the Catalan club.
Barcelona are offering Firpo plus €65m, meaning there is a €20m difference between the two sides.
As things stand, Barcelona may have to include another player since they are unwilling to offer any more money.
The Nerazzurri are not willing to drop a single euro from Martinez’s €111m release clause. They value Junior Firpo at €26m, which is why they insist on the full-back and €65m in cash.
The two clubs are still talking but remain far away from reaching an agreement.
22-year-old Martinez has already made it clear to Inter that he wants to join Barcelona and play alongside Lionel Messi.
He is struggling to understand why Inter are refusing to budge on their asking price during an economic crisis.
The Argentine international wants the saga to end now so that it doesn’t affect his late season form.
At Barcelona, they are adamant that they will only sign Lautaro for a fair price and know the striker will force a transfer if he has to.