David Moyes' exit was confirmed this morning, but what does it mean for the man he brought with him from Everton last summer?
When David Moyes and Marouane Fellaini strolled into Old Trafford's Europa suite last September to parade the Belgian signing, the questions that ensued appeared more focused on the failed pursuits of star-studded names throughout the summer window than they were on Fellaini and what he could bring to the club.
As the cluster of reporters interrogated Moyes on his decision to spend £27.5m on the Belgian, it was impossible to avoid the sense that the world was already against a man who proved out of his depth in the Old Trafford hotseat.
If ever there was a symbol of Moyes' failed succession to the Sir Alex Ferguson era, it's Fellaini.
Liberated at Everton after the departure of Tim Cahill in 2012, Fellaini filled the Australian's void in behind the lone frontman, using his physical frame to unsettle opposition defences by winning flick-ons and provided a threat from set pieces.
His goal and general performance against United on the first matchday of last season's Premier League was perhaps one factor behind such a massive outlay in the transfer market from United, but Moyes' presence at Old Trafford was the key behind the move.
While Moyes has failed to motivate some of United's roster of experienced players and found himself tactically outmanoeuvred all too often this season, Fellaini's sole contribution has been to mirror his mentor's toils on the pitch.
His struggles were demonstrated during the 3-0 home defeat by Manchester City, when Fellaini's physical attributes extended to an elbow on Pablo Zabaleta and made him seem more intent on nipping at ankles than restoring some order to United's woeful midfield.
In Fellaini's defence, he has been tasked with an altogether different role to the one he performed at Goodison Park, where the unfashionable 'battering ram' tag was harsh yet accurate.
It masked the obvious limitations to his game from a deeper midfield position but they have been brutally exposed time and time again with United, where he has proved a hindrance to Michael Carrick.
The signing of Fellaini is one reason why the United board may have moved swiftly to act before the summer transfer window in sacking Moyes. Given his lack of experience at the top table in the market, it seemed fanciful to suggest Moyes could be entrusted with the rumoured £200m kitty and spend it wisely.
The January addition of Juan Mata was also a costly one, but the Spaniard looks far more accustomed to providing the style of football United fans crave. Fellaini has had one too many chances and has failed to inspire on each and every one of those.
As much for his own sake as United's, Fellaini's departure now appears an inevitable one. United simply cannot afford to tread water this summer after such a lacklustre campaign and with a mass overhaul required, the World Cup hopeful must be moved on after struggling as much as the manager who adores him.
United need all the help they can garner in the coming months to resurrect an ailing side in need of fresh impetus. Removing the entirety of United's failed ex-Evertonian revolution may be the way forward.