Ole Gunnar Solskjaer's 'biggest concern' about his Manchester United team is that Harry Maguire can't be trusted in one-on-one situations, according to Rio Ferdinand.
United's captain isn't known for his speed and that sometimes leaves United's defence vulnerable when opponents attack them with pace.
The same issue applies to Maguire's regular partner Victor Lindelof, meaning United are likely to go into the transfer market to buy a new defender in the summer.
Harry Maguire's lack of speed and weakness in one-on-one situations is Ole Gunnar Solskjaer's 'biggest concern' in the Manchester United team, according to Rio Ferdinand
Solskjaer and United are likely to search for a new central defender to partner Maguire
And it's been noted by former United centre-half Ferdinand, who suggested it's something Solskjaer must address to keep his team progressing.