San Diego ? The City Attorney’s office warned a group seeking to bring an NFL team back to Los Angeles to stay away from the San Diego Chargers.

A letter written by City Attorney Casey Gwinn said any contact by the Anschutz Entertainment Group could cause a significant drop in ticket sales if publicity about a possible Chargers’ move to Los Angeles grows.

“The city trusts that AEG will conduct its business affairs in Los Angeles without interfering with the contractual rights and obligations of the city and the Chargers under the agreement,” the letter read.

AEG said Wednesday that company president Tim Leiweke could not comment on the letter because he had not seen it.