The Leicester City black armbands are a tribute to the late King of Thailand.
You might have noticed that the Leicester City players lining up against Chelsea at Stamford Bridge today are sporting black armbands. The Leicester City black armbands are in tribute to King Bhumibol Adulyadej of Thailand, who passed away this week after a period of ill health.
— Leicester City (@LCFC) October 15, 2016
Leicester's connection to the King come via their owner, Vichai Srivaddhanaprabha. The players and club staff had paid tribute to the King during the week at Leicester's training ground.
Chelsea players are wearing black armbands as a sign of respect to Willian's mother, who passed away during the week also.