Ander Herrera, Marouane Fellaini and Michael Carrick tipped to step into the breach.
With Sadio Mane absent, both players are options to come into the starting XI.
Marcelo will still miss Sunday's trip to Real Sociedad, but will be back to face Real Betis.
Josep Maria Bartomeu hailed Catalans' decision against paying £175.8m for Liverpool star Phillipe Coutinho.
Reds have conceded 7 times in their last two matches in all competitions.
Gunners' failure to improve their defence means their Premier League title challenge is doomed to fail.
Sanchez is expected to leave the Emirates as a free agent at the end of the season.
Josep Maria Bartomeu insisted Messi's father has already signed agreement on behalf of his son.
The Kenya international remains out alongside Danny Rose and Erik Lamela.
Bundesliga club face four charges after including crowd disturbances and setting off flares.
The 21-year-old was also linked with Liverpool, Bournemouth and Crystal Palace.
The duo have been added to the B list that also includes Rashford, Tuanzebe, Pereira and McTominay.
Carlisle attempted suicide in 2014 and was last seen in Manchester at around 6am this morning
Pogba suffered a hamstring injury on Tuesday and will miss up to six weeks.
Goalkeeper says Gunners will play to win against Chelsea at Stamford Bridge this weekend.
Mane is suspended for 3 games after picking up a red card against Manchester City.
The champions have had 48 hours longer to rest after their pair's European exploits.
Saunders claims Liverpool will not win trophies without strengthening their defence.
Paul Pogba suffered a hamstring injury in United's 3-0 Champions League win over Basel.
Kolasinac scored Arsenal's opener after coming on in the second half.
Liverpool settled for a point in their first Champions League fixture of the season at Anfield.
Arsenal boss said police decision to play the game after 60 minute delay was a "risk".
Earlier German fans brought central London to a standstill.
Cologne fans storm the turnstiles and fight with police in Europa League opener at Arsenal.
Former Valencia striker missed Champions League win over Juventus due to illness.
The Croatian was forced off during the 3-0 win over Apoel in the Champions League.
The 15-year-old joins his boyhood club after having been with the Sky Blues since the age of seven.
Frank de Boer's dismissal and reaction to Sadio Mane's red card highlight how football is becoming unrecognisable.
Wayne Rooney starts his first game in Europe for The Toffees.
Club president Josep Maria Bartomeu continues to claim a new contract is agreed.