United have endured a difficult season under Moyes, with the 2013 Premier League champions currently languishing in seventh place, and rather than an end of season push towards the title, the Red Devils are instead looking to guarantee a spot in the Europa League - a sign of their decline over the past 12 months.
With a number of underwhelming or ageing players currently on the books, Moyes is expected to carry out a full scale overhaul of his squad this summer, and one of the main areas that United fans want solving is the centre of midfield, where Moyes' side continue to struggle.
The position was their focus last summer as they targeted the likes of Cesc Fabregas, Thiago Alcantara and Ander Herrera, but they were ultimately left to sign Marouane Fellaini for £27.5m on deadline day - a move that hasn't paid of at all, with the Belgian really struggling to make an impact since his switch from Everton.
This leaves Moyes still short of talent in the centre of midfield, and it's now anticipated that Moyes will seek to add at least one more midfielder - with Feyenoord's Tonny Vilhena now believed to be on his list of targets.
Vilhena, who turned 19 in January, has already played 70 games for the Rotterdam outfit having established himself as a key first team player since breaking into the team back in 2012. His impressive displays have now caught the eye of not only United, but also Serie A giants Juventus, with £5m swoops on the cards this summer.
United may not be able to offer him Champions League football like Juve can, but the Italians already have the likes of Andrea Pirlo, Arturo Vidal, Claudio Marchisio and Paul Pogba vying for spots in the midfield, and with United's midfield devoid of realy quality, Vilhena certainly has a better chance of making an instant impact at Old Trafford.