There should have been some pushback from Keane, had podcast on in the background yesterday morning, and didn't think too much of the comment initially.
5mins before they were talking about Nev getting torn up by Fran, Keane not enjoying playing against the technicality of Real/Barca - Nev tries throwing Juve's name in there, with Keane saying he wasn't worried about Italians as he enjoyed the physicality.
He's got a bug up his arse on Juve - and his mouth was too quick for his brain, and knew full well he was opening a can of worms but carried on to raise the subject anyway. Points off-camera and mutters something about legal. Keane's warying of naming names and knows chat has turned to nonsense.
Probably a notion of the Italians doping and a comment he's had rattling about for ages, and been waiting the right time and setting to drop it.