Manchester United signed Ibrahimovic in the summer.
Rooney became United's all-time top scorer on Saturday.
Zlatan Ibrahimovic has impressed at Old Trafford.
Pogba struggled in the 1-1 draw.
Mourinho and Klopp had a heated exchange on the touchline.
United stretched its unbeaten run at Old Trafford.
United hosts Liverpool on Sunday.
Jurgen Klopp's side travels to Old Trafford on Sunday.
United is on its best run of form since the days of Sir Alex Ferguson.
Mourinho's United has drawn level on points with Tottenham.
United has now gone 11 Premier League games unbeaten.
United toiled for most of the game in east London.
Ibrahimovic had a "fantastic year."
The transfer window opens on January 1.
Mourinho's current contract runs until the summer of 2019.
United have been unbeaten in the Premier League for eight games.
Ibrahimovic scored his 16th goal of the season on Saturday.
Ibrahimovic has impressed in his debut season at Old Trafford.
Zlatan Ibrahimovic and Marcos Rojo will face no further action over Crystal Palace altercations.
Mourinho needs more transfer windows to turn around United's squad.
United is close, but still requires help in key areas.
Henrikh Mkhitaryan scored the first goal against Zorya Luhansk.
Pogba rejoined United in the summer after four years at Juventus.
Fellaini conceded a penalty that cost United a victory at Goodison Park.
Ibrahimovic scored in Manchester United's 1-1 draw with Everton.