Liam & Simon cover Chelsea, so I can at least trust their info when they say Chelsea is "monitoring" De Jong's situation, but they are not connected to Manchester United, who, and according to the Athletic too, agreed a fee for De Jong with Barcelona, nor are they connected with Barca (Mitten for example has few connections with Barca), nor they are also connected to De Jong or his camp, hence, why they do not mention they have sources on what De Jong's preference is, and instead said it is their "impression" De Jong prefers Chelsea.