Chelsea striker Costa used to be informed by means of textual content message that he used to be now not a part of Antonio Conte’s plans for the brand new season.
The Spain global subsequently refused to report back to pre-season coaching, as an alternative going AWOL in his local Brazil.
Costa demanded a transfer to Atletico Madrid however a summer time deal by no means materialised because the La Liga membership are beneath an embargo till the New Year.
And Fabregas has expressed his frustration with how the placement between his membership and global team-mate used to be treated.
“It’s a shame for him more than anyone,” Fabregas informed Spanish newspaper Marca.
“Diego knew that if he signed for Atletico he may now not play for a couple of months.
“It has been a hard scenario for each him and for Chelsea; it’s been incorrect.”
Costa is anticipated to signal a freelance at Atletico within the coming days.
The membership have agreed a £67million deal to convey him again from a three-year stint at Chelsea.
Costa, alternatively, gained’t be totally registered till the transfer window reopens on 1 January.
He is perhaps in attendance when Chelsea face Atletico in Madrid on Wednesday evening within the Champions League.
And Fabregas admits he nonetheless needs Costa would stay on the Blues.
“Clearly I might have most popular for him to proceed as a teammate,” he added.
“Diego won’t ever be a rival to me.
“In fresh years there has now not been a natural striker higher than him; he understood my recreation, learn my passes and most significantly he may rating from them.
“With Diego it’s not simply what he provides you with at the pitch however it’s his persona, too, he brings so much to the gang.”