Inter Milan midfielder Joao Mario believes the language barrier was a significant problem for former head coach Frank de Boer.
De Boer was in charge at the Nerazzurri for only 14 games at the start of the season before being sacked.
Mario has reflected on the Dutchman's brief spell at the club and assessed that perhaps the language gap was a concern.
"I think our difficulties are normal because we changed coach just before the season started," the Portugal international told Tuttosport. "It's useless however, to continue to look to the past.
"It's hard to say what was wrong under De Boer, because in football, whenever things go wrong, it's the coach that pays the price.
"Now that we have an Italian coach I have realised that one of the difficulties in the previous regime was the language barrier.
"In fact, maybe it was the main problem. De Boer had good ideas, but he failed to transmit them to the team as Stefano Pioli does today."