Dons’ chief scout Andy King died of a heart attack today (Wednesday).
The popular 58-year-old joined Karl Robinson’s backroom staff last year.
King, born in Luton, spent two spells playing for Luton Town during his career, but it was at Everton where he really made his name.
Playing in midfield, King made 248 appearances, scoring 67 goals in two separate spells at Everton.
After retiring he went into management, taking charge of Mansfield Town, Swindon Town, Grays Athletic and most recently, Northampton Town as caretaker.
An MK Dons spokesman said: “Milton Keynes Dons Football Club are devastated to learn that Chief Scout Andy King has suddenly passed away at the age of 58.
“King, who joined the Dons’ backroom staff in 2014, was a hugely respected figure throughout football and a magnificent individual and friend to many at MK Dons - he will be missed greatly.
“The thoughts of everyone at MK Dons are with Andy’s wife Barbara, his family and his friends at this extremely sad and difficult time.”