According to Corriere dello Sport, United have decided not to extend Fellaini's contract, leaving the Belgium international free to leave the club when his deal expires in the summer (via Calciomercato.com).
The report states there's plenty of interest from Italy, with Juventus and Inter Milan mentioned as possible suitors, but Roma have already made contact with the former Everton man and have been told Fellaini is interested in a move to the Giallorossi.
The 30-year-old has yet to start a game in 2018, and after his career initially appeared to be on the upswing under United manager Jose Mourinho, he seems on his way out. MailOnline Sport seems certain Fellaini will leave Old Trafford:
Roma sporting director Monchi is known as a transfer guru who does his business well in advance of the transfer market's opening. He has a sterling reputation for unearthing talent no one has seemingly heard of but also had several successful reclamation projects during his time with Sevilla.
Per Calciomercato, Monchi is hard at work ahead of the offseason:
While he's expected to sign several high-upside players such as Lucas Torreira, a low-risk, high-reward player like Fellaini would fit Monchi's model as well. With no transfer fee involved, the Giallorossi could lock up a talented veteran with plenty of football left in the tank who could be well-suited to Serie A football.
Fellaini has barely had the chance to play in his preferred position for United―he's at his best when he roams behind the main striker, using his physicality to hold up the ball and create space for his team-mates.
With the Belgium national team, he's found plenty of success in such a role. Per Transfermarkt, he's the team's third-leading scorer among current players behind only Romelu Lukaku and Eden Hazard and ahead of the likes of Kevin De Bruyne, Dries Mertens and Christian Benteke.
The lack of transfer fee could allow Roma to offer Fellaini higher wages than he would get elsewhere, although he will likely have to settle for less than he's making at Old Trafford. According to Miguel Delaney of The Independent, the midfielder is looking for £125,000 per week, which could be too steep for the Giallorossi.