Sven-Goran Eriksson has called on Manchester City's fans to be respectful of commemorations planned for the 50th anniversary of the Munich air disaster.
Eriksson wants to ensure City's fans are respectful
City play at Manchester United on 10 February and Eriksson has written to fans asking them to pay tribute to those killed in the Munich plane crash.
Eight United stars and former City keeper Frank Swift were among 23 who lost their lives on 6 February, 1958.
Eriksson has urged fans not to disrupt a minute's silence before the match.
Former Manchester United club secretary Ken Ramsden, who has helped organise the commemorations for the day said: "What happened at Munich was not just a disaster for United but for the whole of the city of Manchester.
"We are sure that City fans will unite with us and share in the occasion with us."
United will wear a special replica of their 1958 kit on the day, devoid of the players' names or shirt numbers on the back, while City's kit will incorporate a black ribbon with their sponsor's branding removed.