Unai Emery is unconcerned by the red card shown to Matteo Guendouzi during Arsenal's 2-1 Carabao Cup win over Blackpool because he does not feel the teenager "lost control".
Arsenal booked their place in the quarter-finals with Wednesday's win and are due to meet bitter rivals Tottenham in the next round , but it was by no means an impressive collective performance.
Guendouzi set up the Gunners' first-half opener, which Stephan Lichtsteiner converted, before 18-year-old midfielder Emile Smith Rowe netted just after the break.
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Young Frenchman Guendouzi was then dismissed for a second booking in the 56th minute after needlessly tugging on Jordan Thompson, and Paudie O'Connor pulled one back soon after.