The USA left-back is being considered by United as a potential solution for the injury issues plaguing senior fullback Luke Shaw.
Manchester United are watching Fulham fullback Antonee Robinson.AdvertisementAdvertisementThe Sun says United management are willing to splash out on Robinson in January, with Fulham demanding £30m to sell.
The defender famously was set to join AC Milan only for a failed medical to see the deal fall through.
Fulham are reluctant to sell, but will not block Robinson should the right offer arrive.