The Chelsea Football Club and several Premier League fan groups may begin offering supporters found guilty of anti-Semitic or racist behavior a visit to Auschwitz instead of an outright ban.
United have already signed Fred this summer, but Mourinho wants to bolster his midfield options.
The club has a few players with contracts expiring at the end of the season.
Chelsea beat Manchester United 1-0 on Sunday but the Brazilian watched from the stands.
Jose Mourinho returned to the stadium where he won three Premier League titles.
The Italian became a Premier League champion just five months ago, and now his job looks in doubt.
"I think he should look at himself, not others," the Chelsea manager said.
Antonio Conte frustrated by Chelsea's failure to sign another striker in the summer.
An anti-racism organization has contacted United over the chant.
Antonio Conte's team may be Premier League champion, but there are some big changes needed before September comes.
The Spanish striker has not returned to the club this summer and says he wants to move to Atlético Madrid.
The Premier League champion confirmed the signing on Wednesday.
The Italian manager missed out on the signing of Romelu Lukaku, who went to Manchester United instead.
Ivan Perisic may finally be happening.
Manchester United beat Chelsea to Romelu Lukaku's services.
The Premier League's biggest teams are beginning to do business.
The squad leaves for a U.S. pre-season tour on Sunday.
The squad will depart for a U.S. pre-season tour at the end of the week.
Only Victor Lindelof has signed so far.