The Englishman scored in Everton's first two games of the season as they beat Stoke and drew with Manchester City - though two scoreless defeats to Chelsea and Tottenham see Ronald Koeman's side sit 16th in the nascent Premier League table.
Lukaku who left Everton for United during last transfer window, will welcome his former teammates to Old Trafford in a Premier League clash on Sunday.
"I think that he will get the welcome he deserves", said Mourinho of Rooney.
"I think sometimes in this country the word "legend" comes too easily". This isn't a dig at either player as they're defensive midfielders and shouldn't be expected to be creating bags of chances but would we be better to play one or the other instead of both? Inspirational coach Gian Piero Gasperini admits his team aren't quite performing how he would like them to, but there is plenty of talent in the Atalanta line-up, and they are certainly capable of having another strong campaign.
After being marginalized last season in Mourinho's first year in charge, Rooney _ a player who always takes the field feeling he has a point to prove _ will be determined to show he can still cut it on the highest stage.
We've lacked any real creative influence all season and signing Sigurdsson was meant to solve the lack of creativity which we suffered from last season as well.
Minnesota Vikings: Sam Bradford & the defense excelled in Week 1
Ingram has 96 catches in the last two seasons, allowing quarterback Drew Brees to have another weapon coming out of the backfield. But keep in mind, this was an O-line with rookie tackle Ryan Ramzcyk in place of pro-bowl caliber Left Tackle Terron Armstead .
"They are a team with an incredible investment, a team that wants to play for the title, so I'm sure their objective is the top four".
"After this press conference I will have a meeting with most of the players and the key players".
Everton produced a terrible performance as they lost their Europa League opener against Atalanta in Italy.
"He has friends in the dressing room and he has a good relationship with the way we are playing football at the moment".
But in Lukaku, United has a player who can remind Everton of exactly what they are missing. I think fans recognise that.
"We had valued a few different arenas, but against all superstition, in December I suggested it to Sassuolo, as we have a good rapport between the clubs, and are hosted by this wonderful stadium".
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