The 26-year-old playmaker has been heavily linked with transfer to Old Trafford in recent days and United boss David Moyes said on Friday that he is hoping for “good news” over their pursuit of the midfielder in the next few days.
But Bartomeu has categorically ruled out the possibility of Fàbregas returning to the Premier League by insisting that he will be staying at Camp Nou beyond the summer.
“Barcelona can assure you that we will not entertain any offers for Cesc,” Bartomeu told Sport. “It is totally ruled out, he’s not for sale.”
The Premier League champions are understood to have had a bid of around £26m turned down by the La Liga club this week.
“I’m in contact with the executive vice chairman [Ed Woodward], who has been dealing with it just now,” said Moyes.
“I’ll hopefully know a little more in the next day or so. It’s the middle of the night back in England right now so I may have a bit more information in the next day or so about how it’s going.”
Fàbregas has scored 29 goals and made 32 assists in 96 appearances for Barcelona after completing a £35m move to Camp Nou in 2011.