Chelsea are working hard on the signing of River Plate midfielder Franco Mastantuono, regarded as one of the world’s best upcoming young stars. Sources reveal the potential timeline of a deal and the costs required to bring the teenager to Stamford Bridge.

Team Talk reports on Chelsea's efforts to secure Argentine starlet Franco Mastantuono amid competition from Manchester United and Real Madrid. Chelsea are working hard to secure Argentine starlet Franco Mastantuono, facing competition from Manchester United and Real Madrid. Talks for a January transfer are ongoing, but River Plate hopes to keep him until the summer.

Chelsea is among the clubs following the talented teenager Facundo Mastantuono, who has a release clause in his contract worth €45 million. Mastantuono cannot move permanently until he turns 18 in August. An unnamed source close to the deal stated: 'There is nothing concrete and there won’t be in winter. We will have to wait until summer. Many have started conversations, but nothing concrete.'

Chelsea has been observing the evolution of Franco Mastantuono along with other clubs. They intend to renegotiate the player's release clause, possibly following a formula similar to Endrick or Estevão, involving a fixed amount and the rest in easy and medium-term achievable variables.