Mikel Arteta has "installed energy" at Arsenal since being appointed manager, and the Gunners squad "all believe in" the Spaniard, according to midfielder Joe Willock.
Former club captain Arteta succeeded Unai Emery as Arsenal's permanent boss just before Christmas after Freddie Ljungberg spent six games as interim manager.
Arteta's first match on Boxing Day ended in a 1-1 draw at Bournemouth.
Then on Sunday, his side threw away a 1-0 lead and squandered a good 80 minutes of play when they conceded twice to Chelsea in the last 10 minutes at the Emirates Stadium:
There were positives to take from the London derby, though, and Willock, who has appeared from the bench in both of Arteta's games in charge, talked up the impact the new manager has had, per Sam France of Goal:
"He's installed energy, he's installed being there for each other and different tactics.