Its not just Rooney and Lukaku though, Everton have former Manchester United players Michael Keane and Morgan Schneiderlin in the ranks, while United have got former Everton favourite Marouane Fellaini in fine form too.
The Belgian however did score 87 goals in 166 Everton games.
The striker's departure left a huge void in the squad which Everton have struggled to fill, leading to a hard start to the Premier League season with four points from four games.
Wenger insists Sanchez is 'well-loved and happy' at Arsenal
They started in the 4-0 loss to Liverpool last month and received severe criticism from pundits for their performances. Pedro, Davide Zappacosta Cesar Azpilicueta, Tiemoue Bakayoko and Michy Batshuayi all found the net for their side.
"They understand that from time to time when you move from certain areas, and certain eras as well, you have to change things and I think Mourinho has changed over the years because his management style was demanding, asking for full control".
'I think that was the way.
With Rooney playing significantly less last season, it was clear that Mourinho no longer considered his captain one of the team's most important players on the pitch, although there's no doubt that Rooney's off-the-pitch qualities are missed.
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Mourinho believes his side are now demonstrating a killer instinct they lacked last season, having averaged three goals per game so far in the Premier League - an improvement on their 1.42 goal ratio in his first campaign in charge.
However, Mourinho said he couldn't stand in the way of England's record goalscorer when he wanted to leave.
"So it's not just the striker". Romelu's team plays different football and the confidence levels are different and it is a team in the second year of its evolution in some aspects. We couldn't be happier (with him).
Auburn OL Darius James carted off field with injury against Mercer
James, a senior, lied with his face down and showed no signs of movement while he was being treated after sustaining the injury. Starting from its own 44, Auburn marched the ball into Mercer territory thanks to the arm of Stidham and the legs of Pettway.
Mourinho refused to enter into any debate as to how Lukaku and Ibrahimovic compare. I think it's very stupid to compare the incomparable. He doesn't have an entourage of complex dimensions like nowadays you see with some players. "I am not going to do that".