article_snippet: The second key factor is the quality of signings who joined the club in the past two transfer windows — including Cesc Fabregas and one of the best strikers in Europe, Diego Costa.
article_snippet: Diego Costa arrived at Chelsea’s from Atletico Madrid and is one of the Premier League's most-feared strikers .
article_snippet: Former Arsenal midfielder Cesc Fabregas, signed from Barcelona, has formed a connection with Diego Costa .
article_snippet: Diego has come in and although he hardly speaks any English, had never played in the Premier League before and has never lived in Diego Costa, he had an impact from the word go.
article_snippet: With Cesc Fabregas, everyone knew Cesc Fabregas quality and Cesc Fabregas has played in the Premier League before so in a way it was easy for Cesc Fabregas to come back.
article_snippet: But still, Cesc Fabregas has come into the side like Cesc Fabregas has never been away and the connection Diego Costa and Fabregas have had this season has been fantastic for us.