Jose Mourinho hit back at Maurizio Sarri's claims that Roma's match against Slavia Prague was a 'friendly', as he questioned the achievements of the Lazio boss.
Sarri, after his side's victory over Feyenord on Tuesday, questioned the fixture scheduling prior to their highly-anticipated derby in Serie A on Sunday afternoon.
He said: 'Roma can afford a friendly on Thursday and we played a war tonight, there is a fundamental difference'.
Clearly, the comments have not sat well with rival boss Mourinho, who has since questioned the 'mentality' of Sarri and suggested that he's not 'offended'.