Eden Hazard must deliver more to realise his full potential and help dig Chelsea out of a slump in form, manager Maurizio Sarri said on Wednesday.

Sarri heavily criticised his side’s mental strength after they slipped to a 2-0 Premier League defeat at Arsenal on Saturday, labelling his players “difficult to motivate”. However, Sarri’s tactics are also under the spotlight as he has persisted with playing Hazard in an unfamiliar centre-forward position over the past month. Chelsea look set to remedy their striker problem with the imminent arrival of Gonzalo Higuain on loan, who scored 38 goals in one season under Sarri at Napoli in 2015/16. That should see Hazard return to his favoured role on the left side of a front three, and Sarri wants more from the man voted the second best player at last year’s World Cup. “In this moment, he’s more an individual player than a leader,” said Sarri on Wednesday.