Chelsea manager Mauricio Pochettino believes young leaders will gradually emerge from his inexperienced squad, but they need time to develop.
Mikel Arteta has told his Arsenal players to dig deep after their Premier League title bid took a hit with defeat to Aston Villa.
Arsenal's Premier League title bid was put in doubt as Unai Emery's Aston Villa recorded a 2-0 win at the Emirates Stadium.
Liverpool's Premier League title hopes were dealt a serious blow as Eberechi Eze scored the only goal in Crystal Palace's shock 1-0 win at Anfield.
Leicester City manager Enzo Maresca has defended Patson Daka for his lack of goals in recent games.
Lacklustre Liverpool were stunned 3-0 by Atalanta in a Europa League quarter-final collapse that could prove to be Jurgen Klopp's last European night at Anfield.