Paul Pogba's second-half red card is the only negative for Jose Mourinho as Manchester United beat Arsenal 3-1 in a thrilling contest at the Emirates Stadium.
Mahrez's representatives were in touch with Dick Law while he himself had spoken to Arsene Wenger and was convinced of the suitability.
Arsene Wenger has already admitted it would be possible to cash in on both Ozil and Sanchez on a free transfer in the January transfer window.
Alexis Sanchez had picked up a minor hamstring injury during Arsenal's midweek win over Huddersfield, but is ready to play against United on Saturday.
Schalke believes Leon Goretzka will make a final decision on whether to sign a new contract at the club during the winter break with his current deal set to expire this summer.
Jose Mourinho has included Nemanja Matic in his travelling squad for Manchester United's trip to Arsenal despite the Serbia international suffering from a muscle injury.
Danny Welbeck is likely to be given the nod to start against Manchester United despite Olivier Giroud netting twice in the win over Huddersfield.
Nemanja Matic picked up a muscular injury in Manchester United's 4-2 win over Watford on Tuesday, 28 November. The Serbian is unlikely to recover in time to face Arsenal.
West Bromwich Albion have slapped a £30m price tag for Jonny Evans. His potential sale can help them use those funds in bringing new players to the club in January.
Mesut Ozil is in the final seven months of his contract with Arsenal and has been linked with moves to Manchester United and Barcelona.
Arsene Wenger has described news of Santi Cazorla's ninth achilles operation as "disastrous" and "sad" and is unsure how badly it will affect plans for a January comeback.
Manchester United have a number of injury concerns heading into their clash with Arsenal with Nemanja Matic a doubt.
Danny Welbeck could come into replace the injured Alexandre Lacazette when Arsenal take on Manchester United on Saturday.
Romelu Lukaku has struggled to impress with the goal after having a good start to his life at Manchester United.
Arsenal forward Alexis Sanchez was subbed off with a hamstring complaint against Huddersfield but should be fit for Manchester United clash.
Arsene Wenger was not happy with the overall performance of Arsenal despite the Gunners recording their biggest win of the season.
Nemanja Matic was withdrawn in the second half in Manchester United's 4-2 win over Watford. Jose Mourinho confirmed the former Chelsea man has suffered an "important" injury.
Argentine international Icardi has already said he will "not answer" any phone calls from Real Madrid.
Alexandre Lacazette will miss the visit of Manchester United on Saturday after the Arsenal striker suffered a groin injury during the win over Huddersfield.
Manchester United midfielder Marouane Fellaini missed the win over Watford with a knee injury, according to reports from Belgium.
The Gunners score three goals in four second-half minutes to confidently dispatch of Huddersfield, whose away-day blues continue at the Emirates Stadium.
Jose Mourinho admits he is concerned over Anthony Martial may be feeling fatigued ahead of Manchester United's clash with Arsenal.