The 27-year-old man after been bought for £32 Million by Stamford Bridge from Atletico in the year 2014 and enjoyed a fine debut campaign, when he won the Premier League under Jose Mourinho.
Has said he was desperate to move back to Atletico Madrid, after a difficult year with the Blues last season.
He also admits that Atletico were ready to re-sign him and for that he was happy to go back, but a deal could not be agreed.
“We all knew the possibility existed for me to return to Spain but it was not to be because of minor details,” Costa told AS.”
“I thank the Atleti fans and [coach Diego Simeone] for his trust.”
“Now I’m at Chelsea and I’m happy there. I already started the season with them. I wish Atleti a good season just like last and that they win titles. I was enthusiastic about returning, I cannot deny it.”
But either way, so far Costa has achieved slot for the men in Blues… Chelsea by scoring 34 goals in 56 Premier League since he appeared in Chelsea.