Quique Setien's side have also been linked with a sensational swoop for former Barca player Neymar, but Bartomeu has admitted that both deals are unlikely to come to fruition in the current financial climate.
"Barca have spoken with Inter about Lautaro, but the talks have stopped. The situation doesn't invite large investments," Bartomeu told Sport.
With regards to Barca's alleged pursuit of Neymar, Bartomeu said: "Neymar? In this situation, it's unfeasible. Nor does Paris Saint-Germain want to sell him."
Bartomeu recently revealed that La Blaugrana are facing losses of up to €200m (£182m) in the wake of the worldwide outbreak.