Speaking on BBC The One Show, the ex-Chelsea manager said, "Chelsea, when I took them over, couldn't beat Arsenal. I'm gonna desensitise the player's brains in and around. So I got a kit from Arsenal and I used to coach Arsenal so I managed to get hold of one. I almost used to use it every day in training. We were having a waiver game, if you were stuck in the middle, you'd get the Arsenal jersey. And by a few weeks of using it, players became less fearful of it."