Arsenal have kept hold of their Chile forward Alexis Sanchez but he will be missing for the opening match of the season on Friday against visitors Leicester City, whose key player Riyad Mahrez has also been the subject of transfer speculation.
Lukaku scored a consolation goal as United lost 2-1 to Real Madrid in the UEFA Super Cup in the Macedonian capital Skopje on Tuesday and his team-mates have been impressed by what they have seen in pre-season. United have been linked with moves for Inter's Ivan Perisic and Real Madrid's Gareth Bale, as well as full-backs Danny Rose (Tottenham) and Serge Aurier (PSG).
Manchester United will be back in the Champions League after winning Europa League.
"Jose is one of the best in the world".
While City's midfield may be stacked this season, there is always need for bodies when you compete in four separate competitions. Let the season get underway and we'll find out soon enough. "We don't want to take any risks". After making some impressive additions in the transfer market, with Joe Hart and Javier Hernandez, Slaven Bilic's team is now preparing a £25 million offer for Sporting Lisbon's 25-year-old central midfielder William Carvalho, according to the Daily Mail.
Ronald Koeman might find having Rooney back is an unwanted headache this season as he tries to replace the guaranteed goals of Lukaku. The Champions League is obviously more hard.
José Mourinho believes Manchester United can win the title, despite starting the season at a similar level to last summer - with the arrivals of Romelu Lukaku, Nemanja Matic and Victor Lindelof offset by injuries to Marcos Rojo, Luke Shaw and Ashley Young. He's wanted four players, but got only three. My club is doing 75% of what I initially asked very well. "We are going to do that, step by step".
The former Shakhtar Donetsk midfielder joined Chelsea in 2013 when Mourinho returned to Stamford Bridge, and the Portuguese was reportedly keen on taking him to United when he was announced as their manager last summer.
West Ham manager Slaven Bilic has reshaped his squad extensively since last season's 11th-place finish. "I really like his method of training, his motivation and his passion".
Just three months after lifting the Premier League trophy, Chelsea manager Antonio Conte has described the new season as the most "difficult" test of his career.