However, Inter Milan remain favourites to sign the Argentine.
"Lautaro to Inter is practically done, we're at 90 per cent," Beto Yaque, one of his agents, told Espacio Acade.
“There's no chance of the deal with Inter collapsing though, we're just looking for the right moment for the lad to have his medical in Milan without losing several days of training.
“There's no chance that Lautaro will remain at Racing after June, then if Inter want to give him away we'll see.
“The Nerazzurri project convinced him and if [Mauro] Icardi is sold Lautaro will take the number 9.
“Martinez is a great player and Inter is a great club for his first step in Europe.
“The Nerazzurri directors and [Vice-President Javier] Zanetti talked about their Inter project, with Martinez at the centre."