Chelsea's struggles should serve as a warning for Manchester United before their takeover, says boss Erik ten Hag.
Chelsea were taken over by Todd Boehly last summer and have spent more than £600m in two transfer windows.
However, the 12th-placed Blues have endured a torrid season and are guaranteed to record their lowest points total in the Premier League era.
"You have to do the right things," said Ten Hag, whose United side face Chelsea on Thursday at Old Trafford.
The Glazer family announced in November they were considering selling United as they "explore strategic alternatives".