Manchester United had a scout posted to Switzerland for Young Boys' surprise Champions League win over Juventus.
TMW says a top level United scout was in the stands with Juve striker Paulo Dybala his prime focus.
The Argentine shone in the defeat, scoring Juve's goal after coming off the bench in the second-half of the 2-1 defeat.
Along with Dybala, it's suggested United were also checking YB fullback Kevin Mbabu.
Mbabu had trials with United as a teen before later signing with Newcastle United.