Mikel Arteta has insisted that Arsenal will not panic after losing successive games for the first time this season but admitted that they must rediscover their identity to get their campaign back on track.

The Premier League leaders face Sporting in the first leg of their Champions League quarter-final in Lisbon on Tuesday after seeing their hopes of an unprecedented quadruple crumble with defeats by Manchester City in the Carabao Cup final and the Championship side Southampton in the FA Cup. Bukayo Saka and Jurriën Timber have been ruled out as they continue to struggle with injuries, although there was better news for Arteta with Gabriel Magalhães, Declan Rice and Leandro Trossard all expected to feature against the Portuguese champions.

The Arsenal manager has been criticised for not fielding his strongest side at Southampton on Saturday but asked for some perspective after a season in which they became the first team to win all eight league stage matches in this competition.

Kepa Arrizabalaga could not stop Southampton's Shea Charles scoring the winner in Saturday’s FA Cup quarter-final. Photograph: Matthew Childs/Action Images/Reuters

“I think what you have to do is clear,” he said. “Instead of panic, understand...