Gunners have sent scouts to watch Dembele after the 20-year-old's recent impressive performances.
Liverpool have scored 16 goals in six Premier League matches in the 2016/17 season.
Zlatan Ibrahimovic scored the only goal of the match in United's Europa League win.
Luke Shaw and Mkhitaryan expected to return for Stoke's visit to Old Trafford.
Chelsea and Manchester City have also been linked with the 18-year-old starlet.
The assistant manager is the first Premier League figure caught in the Telegraph probe.
He becomes the eighth player handed a new contract by Spurs this month.
Zlatan Ibrahimovic nets a close-range header to give Jose Mourinho's side lift-off in Group A.
Italian head coach has come under increasing pressure following a run of only one win in six league matches.
Dembele scored twice in the 3-3 Champions League draw with Manchester City.
Duo committed to Bournemouth and Crystal Palace, despite agreeing that national job is the 'pinnacle'.
23-year-old was already linked with a move to the Nou Camp in the summer.
West Ham United midfielder admit he cried when denied chance to move to north London.
Dutch midfielder has adopted a deeper midfield role since arriving on Merseyside.
The teenager has just been named the PFA Fans' Player of the Month for September.
Manchester United striker looks set to follow Gareth Southgate after Norway hat-trick.
Iwobi has been a regular in Arsene Wenger's team this season.
Champions League winners host Eibar on Sunday following three consecutive draws.
The 50-year-old was caught on camera appearing to accept a bundle of £20 notes.
Former Atletico Madrid star equalised game before Gerard Pique completed comeback.
Mamadou Sakho has not played for Liverpool since starring in the Merseyside derby in April.
Welsh star has been absent since injuring himself against Liverpool.
Tottenham's Dele Alli and Arsenal's Alex Iwobi also feature on 39-man list.
Hammers are investigating claims Andy Carroll and Darren Randolph were drunk on Tuesday afternoon.
Supporters walked out of a game earlier this year in protest over proposed ticket price rises.
The German has two years left on his current contract at the Emirates Stadium.
Leeds United have described allegations concerning owner Massimo Cellino as a "non-story".
The Italian has held a series of meeting with the club's billionaire owner.
Wenger was linked to the job prior to Sam Allardyce's appointment.
IBTimes UK provides the lowdown on little-known Ukrainian outfit ahead of Thursday's Group A clash.