Barnes won 79 caps for England.
Mourinho wants a root-and-branch examination of the club.
"For the team, you have to do anything."
United lost 2-1 at the Sukru Saracoglu in Istanbul.
Rooney looks to be at the end of his United career.
Rooney has been out of favor at Old Trafford.
Mourinho has yet to move out of the Lowry Hotel in Salford.
Rooney has been dropped from Mourinho's first team.
Rooney was dropped by Jose Mourinho.
Songs about Heysel, Hillsborough and the Munich Air Disaster have been heard in the past.
The bitter rivals meet on Monday evening at Anfield.
Rooney has been dropped from the United and England squads.
Ryan Giggs was United assistant manager under Louis Van Gaal.
Southgate is in interim charge after Sam Allardyce was dismissed.
Rooney has been dropped for the qualifier against Slovenia.
Mourinho reportedly wants Romelu Lukaku and Seamus Coleman.
Rooney is reportedly on the verge of losing his place in the England team.
Rooney was booed at Wembley on Saturday.
Rooney continued as England captain despite being dropped by Jose Mourinho.
Southgate replaced Sam Allardyce as England manager.
Real Madrid's Isco is out of favor at Santiago Bernabeu.
The pair have come in for criticism after United suffered a number of defeats.
Rooney was dropped against Leicester City.
Rooney was told he could play wherever he wanted against Slovakia.
A tragicomic note in an increasingly sad tale.
Rooney featured in United's Europa League win.
Mourinho says Rooney cannot afford another bad game.
Henrikh Mkhitaryan is also pushing for a starting place.