Roberts, 24, was found dead at his home on Tuesday and Johnson is hoping to dedicate a victory tonight to his memory.
“I’m absolutely devastated about Dale’s passing; he was a really good friend,” said Adam.
“I grew up with Dale. We were in the same class at school and also played at Middlesbrough together. His parents are friends with my parents and we often went on holiday together.
“I know he was so desperate to improve and get up the leagues as a player, and he was a really good keeper, too. My heart goes out to his family and friends – he was one of my best mates and I’ll really miss him.
“I’m going to go out to Juventus to play in honour of Dale and dedicate my performance and hopefully a victory to his memory.”