United boss David Moyes has admitted signing a new midfielder is his priority ahead of the the new season, although the Spanish club have warned the Premier League champions off the former Arsenal man, who rejoined Barca in 2011 following eight years in north London.
However, having failed with a bid of around £25m last week, United have returned with an improved offer in a bid to land Moyes his first big signing since joining the club.
The interest was never a surprise. Finding a way to improve the midfield is one of David Moyes' most important tasks heading into his first campaign as manager. Fabregas would be a perfect fit for the Premier League club.
Yet, it was unclear how serious the Red Devils were about chasing Fabregas until now. The reported increase from their initial offer shows United are working extremely hard to find a way to get the Spanish international to Old Trafford.
Fabregas is coming off a solid, yet unspectacular, season for Barcelona. He's struggled to maintain top form in two seasons with the La Liga powerhouse since arriving from Arsenal.
One of the main reasons is the superstar squad Barca has in place. Fabregas is just another piece of the puzzle at Camp Nou. That's a significant change from his time with the Gunners, when he was constantly a focal point of the attack.
Moving back to the Premier League with United would give him a chance to regain a prominent role. Robin van Persie is the star of the Red Devils' attack, but there's plenty of touches available behind him that would suit Fabregas well.
That said, it remains unknown if Barcelona will back down from their stance and consider moving him back to the Premier League. The more United offers for him, the tougher it will become for Barca to ignore the interest, however.
The situation is worth watching in the coming weeks.