QPR veteran Derry: Barton tweets not helping
Derry thinks Barton's decision to brand QPR's players as "maggots" was unwise.
"I know Joey. I know him on a different level and I know that when things go against him personally he comes out with some unbelievable comments," the QPR midfielder told talkSPORT.
"Deep down he's a fighter, but at the same time, when you're down and you're really at the bottom of what's been a horrible season perhaps it wasn't the wisest thing."