Manchester United stars Alejandro Garnacho, Harry Maguire and Diogo Dalot mingled with fans after flying to London on Friday ahead of the FA Cup final.
Erik ten Hag's squad had been ferried to Manchester Airport in MPVs with blacked out windows, according to the Manchester Evening News.
Fans claimed the Dutchman was playing mind games with Manchester City by keeping his travelling squad a secret for Saturday's final at Wembley.
But several players were seen mingling with fans near the team hotel in London before a training session on Friday afternoon.