Declan Rice reportedly asked his England team-mates Harry Maguire and Luke Shaw about Manchester United while the trio were on international duty last month.
Ole Gunnar Solskjaer is keen on adding the talented England international to his squad, and The Athletic reported last week that United were considering offering the Hammers a swap deal which would see them sign Rice as Jesse Lingard goes the other way.
According to the Manchester Evening News, Rice sounded out Harry and Shaw on what it is like at Old Trafford during England's camp for their World Cup qualifying triple-header last month.
The report claims that Rice is keen on joining the Red Devils and specifically asked Maguire and Shaw about aspects of the club. United are reportedly preparing an £80million package for Rice, and want to use Lingard as a makeweight in the proposal. However, Moyes has previously claimed that it would take 'Bank of England' money for a club to sign Rice.
"I’m confident he will be here [next season] because he’s under contract," Moyes said of Rice's future. "But like anything else, whatever club you’re at even the biggest clubs sometimes sell their best players because they get the right value.
"But my intention is not to sell Declan at all, my intention is to keep him. But we can’t stop other clubs making offers, but the truth is we’ve had no offers or nothing, nobody has come to us. My plan is, you know what I think of Declan, I think he is a future captain of West Ham going forward. When Mark Noble comes to an end then hopefully it will be Declan Rice, so we’ve no intention of letting him go. If it does come it will need to be the Bank of England money."