Tottenham midfielder Sandro was left at Stansted Airport when the squad flew out to Germany for their Champions League opener against Werder Bremen.
The Brazilian had been told by team-mate Wilson Palacios that he needed to make his way to the private terminal at the airport ahead of departure. But Sandro has not been named in the club's squad for the Champions League this season so was told he would not be allowed to board the flight.
Sandro, 21, was signed by Spurs in March in a £6.5 million deal from Internacional but he stayed with the Brazilian club to play in their Copa Libertadores campaign - the South American version of the Champions League - which they won with a 5-3 aggregate win against Mexico's Chivas Gudalajara last month.
There was then confusion about when he would link up with his new team-mates two weeks ago, with manager Harry Redknapp saying: "Have we really signed him - or is he just a myth? 'I've never seen him here. He's supposed to be here ... but not today!
"'I know he's meeting up with the Brazil squad next week to go and train in Spain. I might have to go to Barcelona for three or four days to watch him - maybe I'll take the wife!"
Sandro was looking forward to playing in the Champions League, and was hoping to emulate his achievements with Internacional. He said after Internacional won the Copa Libertadores: "It was a fantastic moment to win the Copa Libertadores. Internacional helped me grow as a footballer and a person from a very young age and it was a great achievement to leave on such a high.
"It was a fantastic achievement and now I hope to have many more successes with my new team. The Champions League is the best club competition in the world and I am looking forward to competing at this level. I know Spurs has everything that it takes to go further in the competition and I will do everything I can to help.
"The Premier League is the best league in the world. It is a strong league played at great pace and I think my style of play will adapt quickly to this kind of football.
"It is a pleasure to finally be here. I am extremely happy that I have been given the opportunity to join a club like Spurs. I cannot wait to get out on to the pitch and show all the fans what I can do. I am determined to make a positive impression on English football and help Spurs move onto a new level.
"Spurs are a team who are talked about a lot in Brazil. They are one of the biggest teams not only in England but also in Europe because of their history. I watched every game last season when Spurs were going for fourth place, cheering them on and hoping they would qualify.
"When they finally did achieve qualification, it was an absolutely fantastic moment."