Former United striker also says potential arrival of Pedro from Barcelona would "be a wise addition".
Andre Ayew's arrival on a free transfer could represent the best business of the summer.
Brendan Rodgers expects to have striker Daniel Sturridge back from injury in early September.
Barcelona winger Pedro has been heavily linked with a move to Old Trafford in recent weeks.
Arsene Wenger is keen for youngsters to go on loan and gain first-team experience.
Dembele featured in a number 10 role last season but has also been deployed on the right.
Manchester United face Tottenham Hotspur in the Premier League clash on 8 August. Find out how to follow the match live in the UK.
James Milner arrived at Liverpool on a free transfer from Manchester City
Wenger is unsure why clubs were not consulted over decision to start the season one week earlier.
SAP's Injury Risk Monitor sets out to predict and prevent injuries to football players using big data.
Louis Van Gaal previews the start of the Premier League campaign against Tottenham on Saturday 8 August.
Alan Pardew says the Eagles have had no enquiries for the Congolese winger.
29 year old is 'delighted' to have committed his future to the Premier League giants.
Redknapp believes Wilshere's injury is a bigger loss for England than the Gunners.
Former Barcelona boss had been tipped to replace the Chilean next summer.
Former Blues manager says Chelsea are favourites to retain their league title.
Relive the action from Switzerland as Manchester United draw Club Brugge and Celtic are paired with Malmo.
Terry believes the club's pursuit of Everton defender will help them continue to grow and succeed.
Argentine joined French champions for £44.3m on 6 August, 12 months after his club record move to United.
Arsenal and Manchester United are reportedly interested in signing Real Madrid star Karim Benzema.
Louis van Gaal is keen to add more firepower to his forward line before the end of the transfer window.
Pochettino is glad to see Hugo Lloris back between the sticks despite not being ready to play 90 minutes.
Egyptian winger returns to Serie A and is set to spend the 2015-16 season on loan at the Stadio Olimpico.
Republic of Ireland midfielder was also attracting attention from Manchester City but signs on until 2020.
The former Liverpool star says Barcelona will miss him next season.
Right-back signed a new three-year deal earlier this week and joins five teammates in the Eredivisie.
The striker will play alongside his teammate Isaac Hayden at the Championship side.
IBTimes UK looks at the five sides United could be pitted against for a spot in the group stage.
Roberto Martinez still has job to do in the transfer window to replicate his debut season.
Reports indicate that Spurs are pondering a bid for QPR striker as an alternative to the WBA hitman.