Jan 2 (Reuters) - Chelsea's players remain focused despite ‌the club's sudden managerial upheaval, interim boss Calum McFarlane said on Friday after what he described as a "crazy 24 ‌hours" following Enzo Maresca's New Year's Day departure.

The club's under-21s head coach was thrust into the spotlight ‌after Maresca suddenly left amid a poor run of form, with a daunting debut awaiting him when they face Pep Guardiola's second-placed Manchester City on Sunday.