Ramires left Stamford Bridge in January for Chinese club Jiangsu Suning in a deal worth around£25m
The Brazilian midfielder was a regular member of the squad but fell out of favour towards the end of his spell.
“I’ve had a lot of friends at Chelsea, it’s hard to talk about one or the other,” Ramires told Goal.
“It was a very good group to work with and I miss them all, especially Willian, Kenedy and Diego Costa, who were the ones who had the most friendship out of the field recently.”
Ramires won five trophies with the Blues under a few of managers, including the Premier League and Champions League.
Ramires added: ”I cannot deny that the special moment for me was when I scored the goal over Valdes on Camp Nou in the semi-finals of Champions League.
“The importance of that moment was so great that people asked me to talk about the goal and did not ask for the title.
“It was something magical, that was eternalised in my memory and in the memory of every fan of Chelsea.”