The war of words started after Onana claimed in a pre-match press conference that United 'are way better' than the Ligue 1 side and that he is confident of winning the clash. Matic then responded to the keeper's comments, saying: "I don't know. To say something like that, you need to have courage. I respect everyone, but I need to answer. When you're one of the worst goalkeepers in Man Utd's history, you need to take care about what you are talking. If David de Gea, Peter Schmeichel or Van der Sar said that, I will question myself. But if you are statistically one of the worst goalkeepers in Man Utd's modern history, then he needs to show that, before he says so. We will see."