There were suspicions of offside and so a mandatory VAR check followed. That meant some celebrations weren't so euphoric right away, however Odegaard was the exception.
The Norwegian, on loan from Real Madrid, dropped to his knees and slapped the turf - clearly over the moon his side had booked a spot in the last.
Odegaard has only recently made the temporary move to North London and hasn't quite got going yet but Arsenal supporters are convinced he is here to stay.
Just imagine what Odegaard will be like when he finds the net himself?
The 22-year-old is on loan until the end of the season and has made six appearances under Mikel Arteta so far.
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