The Japanese youngster was intended to be Arsene Wenger's seventh man on the bench against Bayern Munich and travelled to Germany before the club learned that he was ineligible
|25/1||Arsenal are 25/1 with Bet365 to qualify for the Champions League quarter-finals|
Miyaichi is registered on the 'B' list of players but Uefa rules state that a player on that list needs to have been at the club continuously for three years to qualify - and, due to the fact that he has spent time out on loan, the midfielder has fallen foul of those regulations.
With the likes of Kieran Gibbs and Yaya Sanogo not travelling due to injury, that left Wenger in the embarrassing position of only naming six men on the bench for the second leg of their last-16 tie.
The Gunners need to overturn a 2-0 deficit from the home leg if they are to reach the quarter-finals as they face a Bayern team who have dominated the Bundesliga this season.