Arsenal secured their place in the quarter-finals of the competition with a 3-2 aggregate win over Olympiacos, despite suffering a 1-0 defeat on the night in north London.
Tottenham looked set to join them after a 2-0 win in their first leg last week.
Jose Mourinho’s side suffered a humiliating 3-0 defeat away in Zagreb, however, with Mislav Orsic netting a superb hat-trick to send them crashing out of a competition they were among the favourites to win.
Reacting to Tottenham’s exit, Arteta told a press conference: ‘It shows the level of the opposition.
‘People take for granted that you play against any opponent and you’re going to be through because of the name of the club they represent. It’s not like that.’
Arsenal suffered an early exit of their own last season with Olympiacos sending them out in the round of 32 stage.
The Gunners secured their revenge this season but Arteta was left to rue an underwhelming performance that fell way short of his expectations.
‘I am pleased because we are through and last year at that stage we went out by them,’ Arteta said.
‘If I have to evaluate the performance, what we’ve done today with the ball in particular is nowhere near the standards that we set ourselves.’
MORE : Martin Keown praises Gabriel Martinelli but warns Arsenal after progressing to Europa League quarter-finals despite Olympiacos loss
MORE : Martin Keown says Arsenal star Emile Smith Rowe ‘unfortunate’ to be left out of England squad instead of Jesse Lingard
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